Climate change and UK trees: practical garden care

This guide adapts Sarah Gwilliam’s original article, published on 20 November 2024. Updated on 21 September 2026.

A dry summer can make a familiar garden look very different. Leaves may brown, recently planted trees may need extra attention, and a spot that seemed sheltered can feel exposed. The useful question is not simply which trees will survive climate change. It is how to care for the trees you have and make better choices for your particular garden.

Start with the site, not a list of fashionable trees

Before choosing a tree, write down the space available, how the ground behaves after rain, and how much sun and wind the site receives. Include nearby buildings, paths and overhead restrictions. A tree needs room as it matures, so its eventual size matters as much as how it looks in a nursery pot.

Our original article discussed species that might struggle or thrive in a changing climate. Those broad categories are not a planting prescription. A species name alone cannot tell you whether a tree will suit your soil, drainage or available space. Discuss the conditions and the care you can realistically provide before deciding.

Give newly planted trees practical support

New trees need attention while their roots establish. The RHS tree-planting guide explains how planting and aftercare work together. Keep competing grass and weeds away from the immediate planting area, check ties and supports, and plan who will water during dry weather or holidays.

Mulch can help retain moisture, but keep it clear of the trunk. It is not a substitute for checking whether water is reaching the rootball. Avoid treating every tree in the garden as if it has the same needs: a newly planted specimen and a long-established tree are different situations.

Use water thoughtfully during dry spells

The RHS watering advice recommends paying particular attention to newly planted trees and shrubs during dry weather. Check the soil rather than relying only on its surface appearance. Aim water at the root area instead of spraying the leaves, and follow any local water-use restrictions.

Hot weather is also a poor reason to start adding fertiliser indiscriminately. The RHS heatwave guide recommends restraint and explains why established planting should not be mulched over very dry soil before rain returns. Use that seasonal guidance alongside the needs of the individual tree.

Keep a simple record of changes

Take photographs from the same safe position over time. Note when a change began, recent weather, any digging or building work nearby, and whether the whole crown or one branch looks different. This is useful information for a conversation; it is not a diagnosis.

If a tree’s condition concerns you, describe what has changed before deciding that pruning or removal is the answer. Do not climb to investigate or try to pull down damaged branches. An appropriate next step depends on the tree and its surroundings.

Discuss the work you actually need

For a tree-care enquiry, have your location, access details and a short description ready. You can read about our tree surgery service, then get in touch to discuss the work you have in mind.