The most beautiful thing a building can wear is something alive. Across the world, gardeners, architects, and entire cultures have understood this — and acted on it with extraordinary results
The Wall as Canvas
There is a particular kind of beauty that no architect can fully plan for and no builder can deliver on schedule. It arrives slowly, over years and decades, climbing unbidden or carefully trained up the faces of stone walls, brick façades, timber pergolas, and iron railings. It changes colour with the seasons, erupts into flower at its chosen moment, and then retreats — partially, partially only — into a quieter, greener presence for the rest of the year. It softens hard edges, colonises mortar joints, drapes itself over porches with an ease that suggests it always belonged there. It is, when it works, the most persuasive possible argument that buildings and plants are not separate categories of the designed world but continuous expressions of the same impulse: the desire to make a place that is genuinely beautiful to inhabit.
The climbing plant is one of the oldest and most globally distributed of all garden traditions. Long before there were herbaceous borders, before there were parterres, before there were landscape parks or Zen gardens or any of the other sophisticated traditions that horticultural history celebrates, there were plants growing up walls. This is not an accident of geography or climate — it is a near-universal human impulse, expressed independently across cultures that had no contact with one another, using whatever climbing plants the local flora provided. The medieval monk who trained a rose up the cloister wall, the Japanese garden designer who guided a wisteria over a timber pergola until it became indistinguishable from architecture, the Greek island householder who planted a bougainvillea at the corner of a whitewashed wall — all were responding to the same insight: that a building draped in flowering plant is better, in some fundamental way, than a building without one.
What follows is an attempt to map this tradition across the world — to identify, in each of the major horticultural cultures, the climbing plants that have defined the visual character of built environments, the buildings that have been most beautifully transformed by them, and the particular aesthetic logic that governs how each culture uses its vertical planting. This is not a horticultural manual, though it contains horticultural detail. It is, rather, a cultural essay that uses plants as its subject matter — an exploration of what the vertical garden reveals about the places it inhabits and the people who tend it.
We travel, in these pages, through climates and cultures as diverse as the plants themselves: from the rose-draped manor houses of the English countryside to the bougainvillea-soaked villages of the Mediterranean; from the wisteria-wrapped timber gateways of Kyoto to the passion-flower-colonised colonial architecture of South America; from the Virginia creeper-covered university buildings of New England to the jasmine-threaded courtyard walls of Marrakech. In each place, the climbing plant tells a story — about the culture that chose it, the building it inhabits, and the particular form of beauty that results when the living and the built are allowed, with sufficient patience and skill, to become one thing.
The United Kingdom: The Rose on the Wall and Everything That Follows
If any single image defines the British relationship with climbing plants, it is the rose on the wall of a country house — specifically, a climbing rose in full June flower, its canes trained along the mortar joints of old stone or weathered brick, its blooms tumbling outward in that characteristic, slightly dishevelled abundance that suggests nature rather than design, however many hours of winter pruning and careful tying-in have actually produced it. This image is so deeply embedded in the British cultural imagination that it has become almost a cliché — and yet, like the best clichés, it endures because it corresponds to something genuinely true. A climbing rose on an old stone wall in full flower is, simply, one of the most beautiful things available to the eye in the temperate world.
The British tradition of growing climbers on buildings is as old as British gardening itself, and it has produced, across several centuries of observation, selection, and breeding, a depth of knowledge about which plants work on which aspects, in which soils, against which building materials, in which combinations with other plants, that is available nowhere else to quite the same degree. This knowledge is practical as much as aesthetic: the British climate — its reliable rainfall, its mild winters, its relatively cool summers — is almost uniquely suited to a wide range of climbing plants, and British gardeners have taken full advantage of this, developing a tradition of wall planting that encompasses roses, clematis, wisteria, honeysuckle, climbing hydrangea, and a dozen other genera with an intimacy and expertise that the best nurseries and garden writers of the country have codified into an accessible body of practical wisdom.
The rose comes first, always. The history of climbing roses in Britain is long and distinguished, beginning with the native Rosa sempervirens and its cultivated relatives and expanding dramatically in the nineteenth century as plant collectors brought species from China — Rosa banksiae, the Banksian rose, with its clusters of small yellow or white flowers produced in extraordinary profusion in April and May; Rosa mulliganii, the great white rambler that covers cottage porches in June with a weight of bloom that seems almost implausible; the Himalayan musk rose, Rosa brunonii, whose single white flowers in enormous clusters carry the most powerful fragrance of any rose climbing in the British climate — and the hybridists began the work of crossing these new arrivals with existing European varieties to produce the climbing and rambling roses that now constitute one of the richest groups of cultivated plants in the world.
The distinction between climbing roses and rambling roses matters, and British gardeners understand it in practical terms. Ramblers — cultivars derived primarily from Rosa wichurana, Rosa multiflora, and their relatives — produce their flowers once, in June and July, in enormous clusters on flexible, whippy canes that can be trained along wires, over pergolas, through trees, or along walls with considerable ease. They are the roses of the cottage wall and the church porch, and their once-a-year flowering, far from being a limitation, produces an intensity of seasonal effect — three weeks of flower so abundant it seems impossible, then a summer and autumn of handsome dark foliage — that no repeat-flowering climber approaches. ‘Veilchenblau’, whose small semi-double flowers open magenta-purple and fade to blue-lilac, is the most distinctive in colour of all ramblers. ‘Francis E. Lester’, a sport of the great Hybrid Musk ‘Kathleen’, produces single white flowers flushed pink at the petal edge, carried in enormous corymbs whose fragrance fills the surrounding garden. ‘Seagull’ smothers its support with pure white single flowers in such quantity that it is virtually impossible to see the foliage beneath.
Climbing roses — which repeat-flower through summer and autumn, produce their blooms on longer, stiffer canes than ramblers, and require more careful training and more regular pruning — offer a different aesthetic: less overwhelming in their June peak, more continuously rewarding across the season. ‘Climbing Iceberg’ on a white-painted wall, its clusters of pure white flowers against pale stone over many months, is one of the most elegant of all wall plant combinations in the British climate. ‘Madame Alfred Carrière’, a noisette climber of the 1870s still widely grown and entirely unimproved upon, produces shell-pink flowers of great delicacy, is tolerant of a north or east wall (a quality of enormous value in a country where many of the most beautiful old buildings face away from the sun), and flowers with a reliability and generosity that more recently bred climbing roses rarely match. ‘Climbing Etoile de Hollande’, a deep crimson with outstanding fragrance, provides the colour of old velvet against the kind of old brick that England seems to produce specifically as a backdrop for this flower.
Clematis is the climbing plant that British gardeners have most thoroughly explored and most exhaustively bred, and the resulting range of cultivars — running into the thousands, encompassing flower forms from the large-flowered plate-like blooms of the Jackmanii group through the nodding, lantern-shaped flowers of the viticellas to the small, starry blooms of the tangutica and orientalis groups — is one of the great achievements of British horticultural breeding. The large-flowered hybrids trained up a house wall are the most familiar expression of this: ‘Nelly Moser’, its pale pink blooms each marked with a deeper carmine bar, sprawling across old brick; the deep purple ‘Jackmanii’, the most commonly grown of all clematis and still one of the finest; ‘Ernest Markham’, a vivid magenta whose colour is so intense it can be difficult to place in mixed plantings; ‘Niobe’, the deepest red of all the large-flowered clematis, its flowers almost black at the petal base, a plant of considerable sophistication that pairs magnificently with the silver-grey foliage of Pyrus salicifolia or the pale yellow blooms of Rosa ‘Climbing Cécile Brünner’.
The combination of climbing rose and clematis on the same wall — the clematis weaving through the rose canes, its flowers appearing between and among the rose blooms in complementary or deliberately contrasting colours — is one of the most characteristic and most beautiful devices of the British garden, and it rewards careful plant selection. The classic pairing of the purple viticella clematis ‘Purpurea Plena Elegans’ with the blush-pink climbing rose ‘New Dawn’ is as good a place as any to begin: the clematis, which flowers on new wood and can be cut hard back each spring without affecting its performance, threads through the rose with cheerful informality, its small, double, pompon-like flowers of deep purple-red providing a colour note entirely different from the rose’s own and extending the display well into August. The alternative of a pale clematis against a dark rose — ‘Alba Luxurians’, white with a distinctive green flush, weaving through the deep crimson ‘Climbing Etoile de Hollande’ — is equally compelling.
Wisteria on a British building is a subject that deserves particular attention, because nowhere in the world does wisteria achieve quite the visual impact that it produces on the old stone and brick of an English country house or an Oxford college in late April and May. The quality of the British spring light — soft, slightly oblique even at midday, filtering through a sky that is rarely the harsh blue of Mediterranean spring — suits the wisteria’s flowers, which are at their most beautiful in diffuse light that allows their colour (the grey-blue of Wisteria sinensis, the warmer lavender-pink of Wisteria floribunda, the pure white of the alba forms) to read at full intensity without being bleached by direct sun. The racemes of the Chinese wisteria (W. sinensis) can reach thirty centimetres in length; those of the Japanese wisteria (W. floribunda), and particularly those of the cultivar ‘Multijuga’ or ‘Macrobotrys’, can reach an extraordinary ninety centimetres to a metre — long, pendulous streamers of pale blue-violet that, on a mature plant trained across the full width of a large house façade, produce an effect of almost hallucinatory beauty.
The great wisteria facades of England are among the most photographed buildings in the country, and they earn their reputation. Merton College, Oxford, draped in wisteria along its high garden wall in May, stops tourists and residents alike in their tracks. The wisterias at Greys Court in Oxfordshire, at Petworth House in Sussex, at Nymans in West Sussex, at the Manor at Hemingford Grey in Cambridgeshire — each is a seasonal event in its own right, a spectacle that rewards planning a visit around. The Japanese phrase for viewing wisteria — fujimi, analogous to the hanami tradition of cherry blossom viewing — has no equivalent in English, but the practice is widespread and entirely intuitive. When a wisteria is in full flower on a great stone building, you go to see it. It would be strange, and somehow ungrateful, not to.
Climbing hydrangea — Hydrangea anomala subsp. petiolaris — is the dark horse of British wall planting: less glamorous than rose or wisteria, less familiar than clematis, but perhaps the most architecturally useful of all climbing plants in the British climate. It is self-clinging, attaching itself to rough masonry or bark with aerial rootlets without the need for wires or supports. It tolerates shade with remarkable equanimity — one of very few flowering climbers that will perform reliably on a north-facing wall. Its flowers — flat, lacecap heads of white, produced in June and early July — are handsome without being spectacular. But its foliage — a clean, fresh green that turns good yellow in autumn before falling to reveal an extraordinary winter framework of peeling, cinnamon-coloured bark and horizontally tiered branching structure — gives it a year-round presence that the showier climbers lack. On an old stone wall of any quality, the climbing hydrangea develops over twenty or thirty years into something that looks entirely ancient and entirely inevitable, its stems thickening at the base into woody structures of considerable character, its upper reaches still producing fresh growth of glossy, heart-shaped leaves that catch every shaft of light that finds its way to the wall’s surface.
The honeysuckle — Lonicera — belongs in any serious account of British climbing plant culture, both for its beauty and for what it represents in the national imagination. The native woodbine, Lonicera periclymenum, has been growing up the walls and through the hedges of Britain for millennia, and its fragrance — heavy, sweet, most intense in the evening, carrying extraordinary distances on warm summer nights — is as embedded in the sensory memory of the British summer as the smell of cut grass or the sound of a woodpigeon. The cultivar ‘Belgica’, which flowers in late May and June in pink-purple and yellow, and ‘Serotina’, which follows it with deeper colouring from July to October, between them provide a honeysuckle season of remarkable length on a wall or pergola. For fragrance at its most intense, Lonicera japonica ‘Halliana’ — the Japanese honeysuckle, with small white flowers that age to yellow, produced in extraordinary quantities from June well into autumn — is unsurpassed, though its vigour requires management on any but the largest structures.
France: The Vine, the Rose, and the Perfumed Wall
The French approach to climbing plants on buildings reflects something of the broader French sensibility about the designed landscape: a preference for order and intentionality, a tendency to treat even the most vigorous and naturally exuberant plants as material to be shaped and managed according to a considered plan, and an aesthetic that prizes the well-maintained and properly trained over the charmingly rambling. This is not to say that French climbing plant culture lacks poetry — far from it. But the poetry is of a different kind from the English: more architectural, more formally resolved, and more likely to integrate the climbing plant into the composition of the building’s façade as a deliberate design element rather than allowing it to accumulate across the surface according to its own preferences.
The vine — Vitis vinifera — is the plant that most distinctively marks the French building, whether château, farmhouse, or village cottage. This is not, in most cases, a wine-producing vine: the vines trained over house façades, up pergola columns, and along the wires above terraces and outdoor dining spaces are grown primarily for shade, for the beauty of their foliage and fruit, and for the particular quality of light that filters through a vine’s broad, lobed leaves — a dappled, greenish-gold that is among the most pleasant forms of shade available in a hot summer garden. The ornamental vine Vitis coignetiae, from Japan and Korea, with its enormous leaves — sometimes thirty centimetres across — that turn in October to a combination of crimson, scarlet, and deep purple quite unlike any other climber’s autumn display, has increasingly been adopted by French garden designers for its architectural scale and seasonal drama. But Vitis vinifera ‘Purpurea’, the Teinturier grape, with its wine-red foliage from spring through autumn and its small bunches of dark purple fruit, remains perhaps the most beautiful vine for growing on a building — its colour deepening through the season from claret to near-black, its form architecturally decisive even in winter when its gnarled stem framework is all that remains.
The rose in the French context is, characteristically, more formal in its application than in the English. The rose trained as a standard on a terrace, the climber espaliered along horizontal wires at precisely measured intervals, the rambler encouraged over an iron pergola in the potager — these are the French expressions of a tradition that the English allow to sprawl with greater liberty. The great roseries of France — the Roseraie du Val-de-Marne at L’Haÿ-les-Roses, founded in 1894, which holds one of the most historically comprehensive rose collections in the world; the rose garden at Bagatelle in the Bois de Boulogne, whose annual competition for new rose varieties has been running since 1907 — exhibit climbing roses with a formality and systematic organisation that reflects the French conviction that even the most beautiful plant material is improved by an imposed structure.
The Château de la Roche-Guyon on the Seine, the Château de Villandry with its elaborate potager and ornamental gardens, the farmhouses of Provence with their walls of terracotta-coloured stone softened by trained rosemary and plumbago — these are the buildings that most fully demonstrate the French approach to the relationship between climbing plant and built surface. Plumbago auriculata (Cape leadwort), not reliably hardy in the north but entirely at home on the walls of a Provençal farmhouse, produces its sky-blue phlox-like flowers from June through October against stone the colour of dried sunflowers, and the combination — blue flower, golden stone, the blue sky of the Midi visible above — is one of those colour combinations so perfectly resolved that it seems less designed than discovered.
The trumpet vine, Campsis radicans and the hybrid Campsis × tagliabuana ‘Madame Galen’, is a climber that France uses more confidently than Britain, partly because the warmth of the French summer suits it better and partly because the French architectural tradition — with its emphasis on strong geometric form, large wall surfaces, and the decorative programme of the façade — provides a better setting for the campsis’s bold, almost tropical flowers. The blooms — large, orange-scarlet trumpets in clusters, produced from July to September on the current season’s growth — are genuinely spectacular against old stone, and the plant’s self-clinging habit (it attaches by aerial roots, like ivy) and vigorous growth mean that a campsis on a warm wall can, within five or six years, create an effect of considerable maturity and drama.
Italy: The Wisteria, the Bougainvillea, and the Grammar of the Pergola
Italy’s relationship with climbing plants is ancient, practical, and extraordinarily beautiful, and it is shaped above all by two factors that have no precise equivalent in northern European gardening traditions: the pergola, as the primary architectural structure for climbing plant culture; and the particular quality of Italian light, which transforms the flowers and foliage of climbers trained against warm stone or over terracotta roofing into something that painters from every subsequent century have found irresistible.
The pergola — a horizontal framework of timber or stone, supported on columns or pillars, designed to carry climbing plants over a walkway, terrace, or outdoor dining space — is one of the Italian garden’s most fundamental contributions to global garden design. It is also one of the oldest: Roman garden literature describes pergolas in terms that make clear they were a standard feature of the Roman villa garden, and the terracotta amphorae and stone columns used to construct them have been found in Roman sites across the Mediterranean. The pergola solved, elegantly and durably, the problem of how to create shade in a hot climate while also making the outdoor space beautiful and productive — vines for fruit and shade, roses for fragrance and colour, wisteria for the extraordinary spectacle of its spring flowering — and it has continued to solve it, across two millennia and across the full geographic range of Mediterranean climate, with undiminished effectiveness.
The wisteria on an Italian pergola is a different aesthetic proposition from the wisteria on an English country house wall. In Italy, the pergola’s horizontal structure suits the wisteria’s growth habit particularly well: the main stems are trained horizontally along the supporting beams, with flowering laterals hanging vertically downward through the pergola’s open framework so that the flower racemes are displayed at eye level, or slightly above, rather than being pressed flat against a vertical surface. The effect — walking through a pergola in late April when a mature wisteria is in full flower, the racemes hanging at head height, the fragrance intense in the warm morning air — is one of the great sensory experiences of the Italian spring garden.
Wisteria sinensis is the species most commonly grown in Italian gardens, its blue-violet flowers appearing before the foliage in late April and early May, and the mature specimens that drape the pergolas of Tuscany and Umbria — their main stems sometimes thirty centimetres or more in diameter at the base, their growth measured in decades rather than years — are among the most magnificent examples of trained plant material anywhere in the world. The Villa della Pergola at Alassio, on the Ligurian coast, contains what is claimed to be one of the largest wisteria collections in Europe: multiple cultivars trained over the villa’s extraordinary system of iron pergolas, their combined spring display attracting visitors from across the continent and providing a spectacle of which photographs, inevitably, capture only a fraction.
Bougainvillea is the plant that defines the Italian south — Campania, Calabria, Sicily, and particularly the Amalfi Coast, where its magenta and crimson bracts (the paper-thin, brilliantly coloured structures that surround the plant’s tiny true flowers) cascade over whitewashed walls and terracotta balustrades with an extravagance that seems almost designed as an act of deliberate contrast with the restraint and precision of Italian formal garden design. Bougainvillea is not Italian in origin — it was named for the French navigator Louis Antoine de Bougainville, who encountered it in Brazil in the 1760s, and it reached the Mediterranean from South America via the botanic gardens of Europe — but it has so thoroughly colonised the visual identity of southern Italian architecture that it is now impossible to imagine the Amalfi town of Positano, or the island of Ischia, or the streets of Palermo’s old city, without it.
The varieties most commonly grown in southern Italy range from the classic magenta — ‘Sanderiana’, ‘Mrs Butt’, and their relatives — through a range of colours that includes deep crimson, salmon-pink, copper-orange, white, and bicoloured forms in which the bracts change colour as they age. A mature bougainvillea on the wall of a southern Italian building can reach ten or twelve metres in height, its canes covered in hooked thorns that make management a formidably uncomfortable task, and in full flower from June to October it produces an intensity of colour that no other climber in the Mediterranean climate approaches. The combination of bougainvillea with the stone, render, and terracotta of Italian vernacular architecture — the warm ochres and umber pinks of the walls, the greenish-grey of the lichen on old stone, the terracotta roof tiles — is a colour relationship of such natural perfection that it looks designed even when it is entirely accidental.
The Rosa banksiae — Banksian rose — deserves special mention in the Italian context, because the climate of central and southern Italy suits it with a completeness that the British climate can only approximate. At Pistoia in Tuscany, a Rosa banksiae ‘Lutea’ planted in 1843 is now officially the largest rose in the world, covering a pergola of roughly nine hundred square metres with its slender, thornless canes and producing in spring an explosion of small, double, butter-yellow flowers of almost unimaginable profusion. This plant — a single specimen, planted by one person in one season, now covering the entire facade of a building — is the most compelling argument available for the long-term investment that climbing plants represent, and for the patience that the greatest examples of vertical planting require.
Greece and the Aegean: Whitewash, Blue Woodwork, and the Bougainvillea Equation
The visual identity of the Greek island building is one of the most globally recognised in architecture — the whitewashed wall, the blue-painted woodwork, the terracotta pot, the vine overhead — and the climbing plants that inhabit it are so thoroughly embedded in that identity that it is genuinely difficult to imagine the buildings without them. What makes the Greek relationship with climbing plants particularly interesting, from a design perspective, is how much it achieves with how little: a single well-grown bougainvillea on the corner of a white wall, a pot of jasmine by the front door, a vine trained over the taverna terrace — these are not complex horticultural undertakings, but their visual impact, in this setting and this light, is profound.
The Aegean light is the crucial variable. It is a quality of light that has been written about by every traveller of any sensitivity since the Grand Tour, and it operates on climbing plants exactly as it operates on everything else it illuminates: by intensifying colour to an almost hallucinatory degree, flattening shadow, and creating an opposition of brilliant white and deep shadow that gives every surface a graphic clarity quite unlike the soft, diffuse light of the north. A magenta bougainvillea against a white wall in the midday light of Santorini or Mykonos is not merely a pretty combination — it is a colour statement of such intensity that it reads from two hundred metres, and that photographers have spent generations attempting to capture and consistently underrepresenting.
Jasminum officinale and Jasminum polyanthum — the common white jasmine and its more tender, more profusely flowering cousin — are grown throughout Greece, their fragrance in the evening and at night providing the olfactory dimension to a visual experience already rich enough. The night-scented quality of jasmine — its fragrance intensifying dramatically after dark, filling enclosed courtyards and terraces with a sweetness that is both delicate and pervasive — has made it the default planting for the outdoor spaces where Greek domestic life is concentrated in the warm months: the courtyard, the terrace, the café table under a vine-covered pergola.
Plumbago auriculata — Cape leadwort, with its clusters of clear sky-blue flowers produced continuously from May through October — is the colour complement to the bougainvillea’s magenta on the walls of the Greek islands, and the combination of the two, one on each side of a whitewashed wall, is a chromatic arrangement of such authority that it seems to have been planned by a colourist of genius rather than arrived at through individual horticultural decisions made over generations. The blue of the plumbago is the exact blue of the Aegean in certain lights and of the painted domes of the Orthodox churches of Santorini — a connection that, whether intentional or entirely fortuitous, gives the plant in this setting a rightness that would be impossible to manufacture.
Japan: The Wisteria Pergola and the Art of Trained Perfection
Japan’s relationship with climbing plants is, characteristically, one of deep botanical knowledge, refined aesthetic discrimination, and patient, exacting cultivation practice. Where the English rose rambler is allowed a certain degree of cheerful disorder, and the Italian wisteria is managed primarily for the visual effect of its mass flowering, the Japanese climbing plant is trained, directed, pruned, and managed according to principles of considerable precision — the goal being not abundance for its own sake but the creation of forms that are architecturally resolved, seasonally calibrated, and worthy of sustained, close attention.
Wisteria — fuji — occupies in Japanese culture a position that goes well beyond the merely horticultural. It has been cultivated and celebrated in Japan for over a thousand years, and the tradition of fujimi — travelling to view wisteria in flower, as one travels to view cherry blossom — is ancient and widely practised. The wisteria traditions of Japan have produced, through centuries of selection, a range of cultivars — in flower colour from white through every gradation of lilac, lavender, and violet to deep purple; in flower raceme length from the standard thirty centimetres to the extraordinary one-metre-plus trailing streamers of Wisteria floribunda ‘Multijuga’ — that is unmatched anywhere in the world.
The great wisteria pergola is the Japanese expression of this tradition at its most monumental: a constructed framework of wood or steel designed specifically to display a wisteria of advanced age, its horizontal extent sometimes covering an area of many hundreds of square metres, its structure disappearing beneath the canopy of flower and foliage during the brief spring flowering period. The wisteria trellis at Kawachi Fuji Garden in Kitakyushu, Fukuoka Prefecture — a long, arched tunnel of interplanted wisteria cultivars in mauve, purple, violet, pink, and white, through which visitors walk as the flowers hang overhead in a dense, fragrant canopy — has become one of the most photographed horticultural spectacles in the world, and the photographs do not exaggerate. It is genuinely one of those places where the experience of being present, in the thing, exceeds the capacity of any reproduction to convey.
In the city context, wisteria is used with particular elegance on the timber structures of traditional Japanese architecture: the gateways, pergolas, and covered walkways of temples, shrines, and historic gardens. Wisteria floribunda trained over the timber torii gate of a Shinto shrine — its purple racemes hanging between the gate’s red-lacquered uprights, the whole composition reflected in a still pool below — is an image so iconically Japanese that it has appeared in art from the Heian period to the present day. The management required to achieve and maintain such an effect is considerable: wisteria’s vigorous growth, if unchecked, would rapidly engulf and damage the timber structures it inhabits, and the annual pruning programme that keeps the plant productive without allowing it to become destructive requires a horticultural knowledge of the plant’s growth habits that takes years to develop.
The climbing hydrangea — Hydrangea anomala subsp. petiolaris, the same plant used in British gardens — appears frequently on the walls of the older buildings in Kyoto and other historic Japanese cities, its white lacecap flowers in June and its extraordinary winter framework of peeling bark providing a year-round presence of considerable architectural quality. But it is the Japanese climbing plant that is least known internationally — the Schizophragma, sometimes called false hydrangea vine — that most deserves wider attention. Schizophragma hydrangeoides, like the climbing hydrangea self-clinging and shade-tolerant, produces in late June and July flowers of great delicacy: flat heads in which the central fertile flowers are surrounded by enlarged, sterile bracts of white or (in the cultivar ‘Roseum’) soft pink, each bract large and papery, trembling in the slightest breeze. Against the silvery-grey weathered cedar boarding of a traditional Japanese building, or the rough plaster of an old clay wall, the schizophragma produces an effect of extreme refinement that no more familiar climbing plant quite approaches.
The Japanese rose tradition — centred primarily on Rosa wichurana and its hybrids — produced a number of climbing cultivars, including ‘Trier’ and ‘American Pillar’, that were taken up enthusiastically by Western gardeners in the early twentieth century. The Japanese themselves use Rosa wichurana cultivars primarily as ground covers and bank planters, their long, trailing stems used to stabilise slopes, but trained as climbers they display the characteristic large-clustered, fragrant white-pink flowers that make the species and its close relatives some of the most beautiful of all once-flowering ramblers.
China: The Ancient Vine and the Scholar’s Climbing Garden
China’s contribution to the world’s climbing plant palette is, in purely botanical terms, enormous. The majority of the climbing plants grown in gardens across the temperate world — the large-flowered clematis, many of the most important climbing and rambling roses, the actinidia species (including the kiwi fruit vine, Actinidia deliciosa, grown ornamentally for its large, heart-shaped foliage and fragrant white flowers), the climbing hydrangea and its relatives, the trumpet vine, and many of the most important wisterias — are native to China or were developed from Chinese species. The plant hunters who explored China from the seventeenth century onward were, in a very real sense, mining the most botanically rich source of climbing plant material on earth.
In Chinese garden design itself, climbing plants are used with the same compositional precision and symbolic intentionality that governs every other element of the classical garden. The wisteria — zi teng in Chinese, “purple vine” — trained over the moon gate or the covered walkway of a Suzhou scholar garden creates a seasonal event of considerable importance: a moment in the calendar — late April in most years — when the garden’s essential character is temporarily transformed by an abundance of flower and fragrance that the rest of the year’s more restrained planting does not approach. The wisteria in the classical Chinese garden is not incidental. It is a planned effect, located at a point in the garden where its flowering will be most fully appreciated — typically in relation to a water surface that reflects the hanging racemes, or framed by a moon gate through which the flowering canopy is glimpsed rather than directly confronted.
The climbing rose has been cultivated in China for at least a thousand years, and the wild species of the Chinese mountain regions — Rosa banksiae, Rosa brunonii, Rosa laevigata (the Cherokee rose, now naturalised across the American South), Rosa filipes, Rosa longicuspis — include some of the most vigorous and visually spectacular of all climbing roses. Rosa filipes ‘Kiftsgate’, introduced to Western gardens from a single plant at Kiftsgate Court in Gloucestershire (hence its name), is perhaps the most extreme expression of this vigour: capable of reaching fifteen metres or more, this great white rambler will climb through trees and over buildings with an indifference to obstacles that makes it simultaneously magnificent and alarming. In the right position — the south-facing wall of a very large old barn, or the canopy of a mature oak tree — it produces in June a flowering of such sheer, overwhelming generosity that all other considerations of management and scale seem temporarily beside the point.
Trachelospermum jasminoides — star jasmine, Chinese star jasmine — is perhaps the most elegant of all Chinese climbing plants for building facades, and it has been adopted with enthusiasm by garden cultures across the warm temperate world. Its small, pure white, five-petalled flowers, carried in clusters from June through August, are intensely fragrant — a scent that has been described as a combination of jasmine and vanilla, heady without being cloying — and its glossy, dark evergreen foliage provides year-round coverage of a quality that no deciduous climber can match. Against the whitewashed render of a traditional courtyard wall, or the dark-painted woodwork of a Shanghai longtang (alleyway house), the star jasmine creates a combination of fragrance, foliage texture, and seasonal flower interest that is among the most accomplished in the repertoire of climbing plant culture anywhere in the world.
India and South Asia: The Bougainvillea Continent
If bougainvillea belongs aesthetically to the Mediterranean — to the white walls and blue shutters of the Aegean, the terracotta surfaces of Amalfi — it belongs climatically to South Asia, where the combination of heat, intense sunshine, and the alternation of distinct wet and dry seasons creates conditions in which it grows with a freedom and vigour that Mediterranean climates can only partially approximate. The Indian subcontinent, from the hill stations of the Himalayan foothills to the coastal cities of the south, from the Raj-era bungalows of Calcutta to the haveli compounds of Rajasthan, is draped in bougainvillea on a scale and with a chromatic intensity that constitutes one of the most spectacular examples of collective horticultural effect anywhere in the world.
The colours available in the Indian bougainvillea palette extend well beyond the magenta and purple that dominate in Mediterranean contexts. The cultivars most popular in South Asia include ‘Scarlett O’Hara’, a deep crimson; ‘Temple Fire’, an orange-red of extraordinary intensity; ‘Raspberry Ice’, a striking variegated form with cream-margined leaves and deep pink bracts; ‘Orange King’, whose colour is exactly described by its name; and the various white and cream cultivars, including ‘Chitra’ and ‘Lady Mary Baring’, whose softer tones provide relief from the more intense colours and whose bracts, in the intense Indian light, take on a luminosity that approaches translucence.
On the vernacular architecture of Rajasthan — the sandstone havelis of Jodhpur and Jaisalmer, the painted facades of Shekhawati, the pink-rendered city buildings of Jaipur — bougainvillea creates colour combinations with the building materials themselves that would be impossible to design intentionally and that result from the particular logic of plants finding their own relationship with the surfaces they inhabit. The deep crimson of a mature ‘Scarlett O’Hara’ bougainvillea against the blue-grey sandstone of a Jodhpur haveli is a colour opposition of such power that it registers almost as a physical sensation. The magenta-pink of the most common varieties against the terracotta-washed walls of a Jaipur courtyard creates a harmonic rather than a contrasting relationship — two expressions of the same warm colour range at different intensities, each intensifying the other.
Passiflora — passionflower — is grown across South Asia on the verandas, pergolas, and compound walls of older buildings with a casualness that belies its extraordinary floral complexity. The flowers of Passiflora caerulea, the most commonly grown species, are among the most intricate in the plant world: a ring of white petals surrounds a complex corona of filaments banded in blue, purple, and white, above which rise the plant’s distinctive stamens and pistil in an arrangement that the Spanish Jesuits who encountered it in South America in the sixteenth century immediately interpreted as a representation of the Passion of Christ — hence the plant’s common name. On a colonial-era veranda in Kerala or Tamil Nadu, passiflora colonises the timber framework with a vigour that requires regular management, its purple-blue flowers appearing continuously through the long growing season and its orange fruits — edible, though inferior to the cultivated passion fruit of commerce — providing additional colour through autumn.
The United States: From the Ivy League to the Coastal South
American climbing plant culture reflects the extraordinary climatic diversity of the continent — the moist, temperate East Coast; the arid Southwest; the Mediterranean-climate Pacific Coast; the subtropical South — and the cultural diversity of the populations that have gardened in these different regions across several centuries. The result is a tradition that is harder to characterise as a unity than any of the national traditions discussed elsewhere in this piece, but that contains, in its various regional expressions, a number of climbing plant stories of real interest and beauty.
The Virginia creeper — Parthenocissus quinquefolia — is the climbing plant most thoroughly embedded in the visual identity of the American East Coast building, and it earns its place with an autumn display that has no equal among self-clinging climbers anywhere in the world. From mid-September to late October, depending on latitude and season, the Virginia creeper turns from its summer green — a useful, unremarkable, somewhat coarse-textured coverage — to a combination of scarlet, crimson, and deep burgundy of extraordinary intensity. On the brick and stone walls of the older university buildings of the Northeast — Harvard, Yale, Princeton, Williams, Amherst — the annual transformation of the Virginia creeper is one of the great seasonal spectacles of the American academic landscape, and the buildings themselves seem to have been designed with the climber’s autumn colouring in mind, their red-brown brick and grey stone serving as an ideal foil for the vine’s spectacular chromatic display.
The related Boston ivy — Parthenocissus tricuspidata, actually native to China and Japan rather than Boston — is the plant most often when people speak of “ivy League buildings” (the institution’s name is thought by some to derive from a Latin abbreviation rather than the plant, though the association has become inseparable). Its leaves — three-lobed, slightly larger than those of Virginia creeper — adhere to masonry with remarkable tenacity, creating a flat, even coverage of considerable architectural elegance in summer and an autumn colour display that rivals Virginia creeper’s own. The walls of Harvard Yard in October, covered in the combined crimson and scarlet of multiple mature Boston ivy plants, are among the most beautiful man-made surfaces in New England.
In the American South, the native climbing plants include several of extraordinary beauty that deserve wider recognition than they receive. Lonicera sempervirens — the trumpet honeysuckle or coral honeysuckle — is native to the southeastern states and produces long, tubular flowers of brilliant coral-red and yellow from spring through autumn with a reliability and profusion that the European honeysuckle varieties rarely match. It has none of the fragrance of Lonicera periclymenum, but its colour — against the white-painted timber siding of a Southern vernacular building, or the grey weathered board of a historic plantation house — is vivid and architectural in a way that suits the directness of the American South’s building tradition.
The native wisteria of the American South — Wisteria frutescens and Wisteria macrostachya — have been substantially underappreciated for most of the history of American gardening, overlooked in favour of the more floriferous Asian species. The cultivar ‘Amethyst Falls’, a selection from Wisteria frutescens, has begun to change this: it produces its lavender-blue flowers on plants only two or three years old (the Asian wisterias typically require five to ten years before they flower reliably), continues to rebloom through summer and into autumn, and is far less vigorous than the Asian species — making it suitable for growing on the kind of smaller-scale structures, pergolas, and house facades that the Japanese and Chinese wisterias would rapidly overwhelm.
The Pacific Coast tradition is shaped primarily by the Mediterranean-like climate of California, where the range of climbing plants available — taking in both temperate and warm-climate genera — is extraordinary. Bougainvillea performs here with something approaching the exuberance of South Asia, its colour seasons extended by the mild winters and the long, hot summers. Solanum laxum ‘Album’ — the potato vine, an entirely undeserved common name for a plant of genuine beauty — covers walls and pergolas in California gardens with a sustained abundance of small white flowers from spring through autumn. Distictis buccinatoria, the blood-red trumpet vine, produces large tubular flowers of deep orange-red that are among the most striking of any climber in the warm-climate garden. And the native California species Clematis lasiantha and Clematis ligusticifolia, scrambling through the chaparral in the wild, have been brought into cultivation in forms that provide a fragrant, cream-white flowering of great delicacy on garden structures.
Morocco and North Africa: The Wall as Fragrant Architecture
The garden culture of Morocco and the broader Maghreb region exists at the intersection of Berber, Arab, Andalusian, and French colonial traditions, and the climbing plants that inhabit its medina walls, riad courtyards, and garden pavilions reflect this extraordinary cultural confluence with a specificity that makes Moroccan climbing plant culture one of the most distinctive and most rewarding to explore anywhere in the world.
The riad — the traditional Moroccan urban house, oriented inward around a central courtyard rather than outward to the street — provides the primary architectural setting for climbing plants in the Moroccan context. The courtyard wall, typically of rendered mud brick or cut stone, rises two or three storeys and is punctuated by the arched openings of rooms and galleries at each level. Climbing plants inhabit this surface in ways that are governed by the riad’s characteristic aesthetic programme: tile work in complex geometric patterns at the lower level; carved plaster above; a timber carved ceiling or open sky at the top. The climbing plant occupies the spaces between these elements, its growth controlled to complement rather than conceal the architectural decoration, its fragrance concentrated by the enclosed courtyard into an intensity that the open garden could never achieve.
Jasmine — specifically Jasminum officinale and the more tender Jasminum sambac — is the defining climbing plant of the Moroccan riad, and its fragrance is the defining sensory experience of the Moroccan garden. The jasmine trained up the courtyard walls of a Fez or Marrakech riad, its white flowers invisible against whitewashed walls in the evening but filling the entire enclosed space with scent that intensifies as the temperature drops, creates an olfactory experience that is one of the most memorable available to any traveller. The flowers are cut daily for use in tea, for offering to guests, for filling the small decorative bowls placed throughout the house — the jasmine in Morocco is a domestic plant as well as a garden one, its fragrance permeating indoor and outdoor life alike.
Bougainvillea in Morocco occupies the public architecture of the medina — the high walls of the old city that line the narrow streets, the exterior surfaces of mosques and madrasas, the facades of the riads as seen from the street — with a brilliance that is entirely at odds with the blank, secretive character of the Moroccan urban building. The Moroccan medina presents to the street an almost entirely featureless surface: no windows, no ornament, simply walls of uniform height in mud brick or render. Against this radical minimalism, the eruption of a mature bougainvillea — fifteen metres of magenta or crimson, spilling over the parapet and cascading down the wall face — is a chromatic event of considerable force. The most beautiful examples are in Marrakech’s Palmeraie district, where the combination of mature bougainvillea, terracotta-toned walls, and palm fronds creates a visual atmosphere that is simultaneously North African and something else entirely — somewhere between Morocco and the imagination’s version of paradise.
The rose in Morocco is primarily a perfumery crop rather than a garden ornamental — the Dadès Valley in the High Atlas is one of the world’s major producers of rose oil and rose water, with Rosa damascena cultivated in such quantities that the valley floor in May is a continuous expanse of deep pink — but the climbing rose appears on garden walls and pergolas throughout the country, trained with less formality than in France or England and more warmth of association than anywhere else. The combination of climbing rose, jasmine, and orange blossom (from the Citrus trees planted in many riad courtyards) creates in the Moroccan spring garden a fragrance of extraordinary complexity and richness that is, arguably, the most completely satisfying olfactory experience available in any garden in the world.
South America: Passion, Colour, and the Colonial Wall
South America is the botanical origin of several of the world’s most important climbing plants — the passionflower, the bougainvillea, several important nasturtium species, and numerous climbing solanums among them — and the continent’s own garden traditions, developed across four centuries of colonial and post-colonial culture, have produced a climbing plant aesthetic of considerable originality and chromatic ambition.
The colonial architecture of the Spanish and Portuguese empires — the whitewashed render of the colonial town, the tiled facades of Lisbon-inspired São Paulo and Rio de Janeiro, the ochre and terracotta of the Andean cities — provides the backdrop against which South American climbing plant culture operates. The colours chosen, consciously or not, tend toward the extreme: the most intense purple of the bougainvillea against the whitest of whitewashed walls; the deepest crimson of the passionflower against green timber shutters painted in the traditional colours of the Brazilian colonial town. There is nothing restrained about the South American approach to climbing plants on buildings, and restraint is not, in this context, what is required.
Bougainvillea in its home continent grows with a freedom unavailable anywhere in the Mediterranean or South Asia — not because the climate is necessarily more favourable, but because the species evolved here, in the seasonally dry forests of eastern Brazil, and expresses in its natural range a vigour that cultivation elsewhere slightly moderates. The oldest and largest bougainvillea specimens in the world are in South America, and they are astonishing objects: main stems of twenty centimetres or more in diameter, gnarled and ancient as old olive trees, their upper canopies covering entire building facades in an unbroken sheet of flower that defies the expectation of what a single plant can achieve.
Thunbergia grandiflora — the blue trumpet vine or sky vine — is one of the most spectacular of all South American climbers in tropical and subtropical garden use, and it is used with particular confidence on the colonial architecture of Brazil and Colombia. Its large, sky-blue flowers — sometimes five centimetres across, the colour an exact, saturated blue-violet that has no equivalent among temperate climate climbers — are produced in hanging racemes from summer through winter in warm climates, and the effect on a white-rendered colonial building, where the vine’s dark green foliage and blue flowers are displayed against a surface of absolute neutrality, is one of those colour combinations that the eye receives as almost physically pleasurable.
Australia: Native Climbers and the New Vertical Frontier
Australian climbing plant culture has, like Australian garden design more broadly, undergone a significant reorientation over the past thirty years — away from the European-derived climbing plants (roses, clematis, wisteria) that the horticultural tradition imported along with everything else, and toward a new engagement with the extraordinary native flora that the continent’s own evolution has produced. The result is, in its best expressions, something genuinely original: a vertical garden aesthetic that is both ecologically appropriate and visually compelling in ways that the European-derived alternatives, however beautiful in their own contexts, cannot quite achieve in the Australian landscape.
The native climbing plants of Australia include several genera of genuine garden merit that are only beginning to receive the attention they deserve internationally. Hardenbergia violacea — the coral pea or false sarsaparilla — is perhaps the most familiar, a vigorous twiner whose chains of small, purple-pink pea flowers from July to September provide one of the most reliable and beautiful of all winter-into-spring flowering displays on walls and fences throughout southeastern Australia. It tolerates a wide range of soils and exposures, grows quickly enough to provide coverage within two or three seasons, and requires minimal management once established — qualities that make it one of the most practically useful as well as visually rewarding of all Australian native climbers.
Pandorea jasminoides — the bower vine — is more spectacular in flower, its white or pink tubular blooms of considerable elegance carried in clusters from spring through summer, and sufficiently vigorous in warm-temperate climates to cover the pergola of a suburban garden within four or five years. The cultivar ‘Rosea Superba’ — pale pink with a deep rose-pink throat — is the finest selection, its flowers possessed of a delicacy and coloured sophistication that equals anything in the clematis or climbing rose range for the equivalent aspect and climate.
Billardiera longiflora — the climbing blueberry, or purple apple-berry — is a slender, fine-textured twiner of great charm, its small, pale greenish-yellow flowers in summer followed by intensely blue-purple fruit that gives it its common names and provides, through the autumn and winter months when the flowers are absent, an ornamental display of considerable distinction. Against the rough-sawn timber boarding of a traditional Australian weatherboard building, it creates a combination of plant delicacy and architectural character that is among the most perfectly resolved of any native climber in any building context in the world.
The Patient Art
The climbing plant is, of all the forms that garden design can take, the one that most fully reveals the relationship between human intention and natural time. A herbaceous border can be replanted if it fails. A parterre can be redrawn. A hedge can be replaced in a decade. But the great climbing plants — the wisteria that has taken twenty years to reach the eaves of a country house, the bougainvillea whose trunk is now indistinguishable from the masonry it inhabits, the rose that has been trained along the same wires for forty years and whose flowering has become one of the reliable anchors of the seasonal year — these cannot be recreated quickly or replaced without real loss. They are long-term commitments, and their beauty is inseparable from the time that has been invested in them.
This is, perhaps, the deepest truth that the climbing plant tradition teaches: that the most beautiful things are not made quickly. The great wisteria facades and rose-covered pergolas and bougainvillea-draped walls that constitute the highlights of this long tour across the world’s vertical gardens are all the product of decades of patient cultivation — of annual pruning, of careful training, of the kind of sustained horticultural attention that requires a willingness to think in years and decades rather than seasons. The gardener who plants a wisteria today and tends it faithfully across the following thirty years is making something for a future self and, beyond that self, for whoever inherits the building and the plant together.
There is something profoundly generous about this. The great climbing plants of the world were planted by people who knew, with complete clarity, that they would not see their full effect. They planted anyway — for whoever would come after; for the building’s future inhabitants; for the street beyond the garden wall; for the simple, sufficient reason that something beautiful should exist there, even if the person who made it possible would not be present to enjoy it.
This is the climbing plant’s most important lesson. Plant generously, train patiently, prune wisely — and trust that whoever eventually looks up at what you’ve made will understand, without needing to be told, that it was worth every year of the waiting.