Drought Triggers Early 'False Autumn' in England — SkimNews
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- Birch trees at Wisley garden lost all their leaves by mid-October due to drought stress, resulting in no autumn colour display this year, according to Royal Horticultural Society chief horticulturist Guy Barter.
- Wisley garden is experiencing an earlier-than-usual autumn colour peak, with drought-sensitive species like birch, beech and sycamore shedding foliage early while deeper-rooted or resilient species like liquidambar remain vibrant.
- Royal Horticultural Society experts warn that climate change is disrupting autumn patterns, as shortening daylight and cooler nights are no longer the sole triggers for leaf colour and drop, with drought now forcing early defoliation.
- Guy Barter expects gardeners to shift toward planting more climate-resilient 'trees of the future' such as liquidambar, Lebanon cedars and swamp cypresses, which tolerate both cold winters and hot, dry summers.
- Tim Upson notes that adaptation at Wisley has been ongoing for decades, citing thriving Californian and Mediterranean oaks planted 30 years ago as proof that forward-looking species selection is already reshaping the UK’s horticultural landscape.
Why it matters: Shallow-rooted trees like birch and beech are becoming less viable in exposed UK locations due to recurring drought, shifting horticultural planning toward resilient species—this alters not only seasonal aesthetics but also long-term ecosystem stability, with gardeners and institutions now prioritizing deep-rooted, climate-adapted trees to maintain canopy cover.
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