At Wisley Garden in Surrey, among the copper, crimson and violet leaves that have turned the landscape into a living tapestry, one tree stands strangely bare. A silver birch, its slender white trunk rising against the autumn backdrop, has already lost every last leaf. Where there should be a burst of sunny yellow, there is only empty branch and pale bark. Guy Barter, the chief horticulturist at the Royal Horticultural Society, explains this quietly: “The birch has lost all its leaves. That’s the effect of drought, so it’ll have no autumn colour this year.” After the hottest summer on record, the tree has simply decided to stop. Months of high temperatures and too little water pushed it into an early sort of surrender, shedding its canopy to save itself from losing any more moisture through its leaves. It is what gardeners call a “false autumn” – a strange, unsettling phenomenon in which the stress of extreme summer weather tricks trees and plants into behaving as though the season has already turned. Walking through the garden, you can feel it: the usual rhythm of the year has been disrupted, and the natural world is responding in ways that are both beautiful and worrying.
This is not just one unlucky birch. It is part of a wider shift in how the United Kingdom experiences the seasons, driven by the climate crisis and the extreme weather it brings. Normally, autumn colour is triggered by shorter days, cooler nights and the return of rain-soaked ground moisture. Trees read the signals carefully, slowly pulling energy back into their roots and letting their leaves fade. But this year, severe summer heat and drought have broken that cycle. Thousands of plant varieties at Wisley are still showing brilliant hues, but the drought-sensitive, yellow-leafed trees – birches, beeches and sycamores – had already shed their foliage by mid-October. Large parts of England and Wales remain in drought, and six areas of England were officially declared in severe drought, with rivers and reservoirs running low. The result is an autumn display that arrived earlier than expected, and in some cases never fully arrived at all. Trees with shallow root systems are the ones struggling most. Unlike deep-rooted species such as oaks, which can reach down to find groundwater, birches and beeches depend on moisture near the surface. When that soil dries out, they panic, dropping leaves to reduce water loss. Barter says the effect has been widespread. “Birch, beech and sycamore have been among the trees worst affected,” he notes. The garden is still colourful, he admits, but not perfect. “It’s at least as colourful as it is most years, but some of the trees are not giving their best, so it’s not the perfect autumn colour.”
What this means for the coming weeks is an earlier peak in autumn colour, especially in drought-hit areas – intense, vivid, but potentially fleeting. The usual display of yellows may be thinner than usual, while reds, ambers and purples stand out more boldly against the bare branches. Tim Upson, the director of gardens and horticulture at the RHS, says the historical peak of colour tends to come toward the end of October and can stretch into November. This year, though, the drought has pushed some trees into colour much earlier. “Quite often now it’s going into November when you get that crescendo,” he says. “So for me, this is quite unusual.” As if to underline the fragility of the moment, Storm Austen arrived with strong winds that threatened to damage buildings and bring down trees. Experts had already warned in September that high winds, made more likely by El Niño, could devastate trees left weakened by months of drought. There is something heartbreaking about watching the season’s beauty become so vulnerable. Leaves that should linger for weeks can be stripped away in an afternoon. The autumn that many people love – slow, golden, reflective – is becoming faster, rougher, and harder to predict. For gardeners and visitors alike, there is a new feeling of uncertainty in the air, a sense that the natural world is under pressure and that even the most familiar sights can no longer be taken for granted.
Yet within this changed landscape, there is also a story of adaptation. Not every tree is struggling. Some species, particularly those with deep roots and strong resilience, are thriving in the new conditions. At Wisley, the largest liquidambar tree in the United Kingdom is putting on a spectacular show with its flutter of pink, red and purple leaves – a reminder that diversity is part of the answer. Barter says gardeners are already thinking carefully about what to plant for the future. He expects that fewer birches will be planted, and more “trees of the future” such as liquidambar, which seem better suited to the hotter, drier summers that are becoming more common. But this is not simply a matter of swapping one tree for another. Barter is cautious, explaining that climate projections suggest milder, wetter winters as well as hot summers, with the occasional really cold winter still possible. “It’s no good planting tender trees,” he says, “because when we have a really cold winter, they’ll succumb.” The answer, he believes, lies in finding trees that are completely hardy in cold winters while also possessing deep, wide-ranging roots that can tolerate heat and drought. Among the species Wisley plans to plant more of are Lebanon cedars and swamp cypresses – trees that combine beauty with strength, and that seem better equipped for a future of extremes. It is a delicate balancing act, part science, part instinct, part hope.
Upson points out that this kind of adaptation is nothing new at Wisley. Gardens have always had to respond to changing conditions, and he remembers that when he started working in horticulture forty years ago, the conversation about resilience was already underway. Thirty years ago, as an experiment, Wisley planted some Californian oaks and Mediterranean oaks. Today, those trees are thriving, proving that a little foresight can go a long way. But even with such successes, the familiar species that people grew up with will not necessarily disappear. Rather, their place in the landscape may shift. Beech and birch could become less common, better adapted to sheltered or damper locations where they can hold on. Upson is thoughtful about this, suggesting that we will not necessarily lose plants altogether, but they may become shorter-lived or unable to grow in the most exposed and stressful situations. “It’s going to be very much a changing landscape,” he says. That phrase lingers. A changing landscape is not just about temperature and rainfall; it is about memory, identity and the quiet grief of watching something familiar transform. The English countryside, and the gardens that are so beloved within it, have always been a blend of wildness and careful human planning. Now that blend is shifting, and the people who tend the land are having to learn a new language of survival.
Standing in the garden, looking at the naked birch against its colorful neighbours, it is hard not to feel a pang of loss. Autumn has always been a season of letting go, but this year it feels more raw, more urgent. The false autumn, the early leaf drop, the brittle branches waiting for a storm – these are all signs that the natural world is under strain. Yet there is also something strangely hopeful in the way the garden carries on. The liquidambar glows; the oaks stand solid; the gardeners plan for years ahead, planting trees that may not reach maturity until long after they are gone. There is resilience in that, a quiet determination to keep beauty alive even when the weather turns against it. The autumn display may not be perfect this year. Some trees will not give their best. But the season still arrives, in waves of colour and sudden gusts of wind, in the crunch of dry leaves underfoot and the low light slanting across the grass. Perhaps the lesson of the false autumn is not simply that the climate is changing, but that change itself has become part of the rhythm. We cannot expect every year to look like the ones we remember. What we can do is watch more closely, adapt more wisely, and take care of the living things that make our world so rich. The birch may have lost its leaves early, but it is still standing, white and patient, ready for whatever comes next. And in the garden, life continues to find a way – not exactly as it used to be, but still beautiful, still moving, still unmistakably full of hope.