Shade Trees - The Hidden Gift to Biodiversity

As the idea of nature restoration and rewilding fires imaginations, we often turn our gaze to landscape-scale change: vast peatlands, temperate rainforests, and whole river catchments. All of that work is desperately needed. But there is also incredible work that can happen on farmland through something as simple as planting shade trees.

Shade trees are a valuable tool for increasing habitat, drawing down and storing carbon, preventing soil erosion, and improving animal welfare and crop protection. They hold benefits for both pasture and arable land.

Since the 1940s, nearly one million kilometres of hedgerows have been lost, along with two-thirds of coppiced woodlands and a large but undocumented number of rural trees outside woods. Shade trees therefore have enormous potential to boost biodiversity exactly where it is struggling most.

What Is a Shade Tree?

A shade tree is any tree on farmland that gives shade and shelter. They have been part of our rural landscape for as long as that landscape has existed. Anyone who has walked in the countryside will know the sight of cows, sheep, or horses gathered around a tree, looking for respite from sun or rain.

Many of those trees have disappeared over time, meaning the ones that remain are often over-used. Where animals repeatedly seek shade beneath a single tree, their hooves compact the soil, making it harder for the tree to breathe through its roots, reducing water infiltration, and damaging the soil microbiome.

That is why, when we plant new shade trees, we plant several and scatter them around the land. This creates a more natural movement pattern for animals and adds more dynamism to the system.

Shade trees also have a role in cropping systems. Large arable fields often use lines of poplars or similar trees as windbreaks in flat, exposed spaces, protecting crops from adverse weather.

What Are the Benefits of Shade Trees?

We have national and international commitments on climate and nature, and trees in farmed landscapes will help us meet those commitments while still supporting agricultural production. Shade trees can help reverse biodiversity declines by increasing the range and provision of:

• Microclimates, niches, and habitats
• Food quality and abundance
• Shelter, overwintering, and egg-laying sites
• Local and landscape-scale connectivity
• Ecosystem services including pollination, pest control, and decomposition
• Improved soil structure and functioning, with positive effects on carbon sequestration, nutrient turnover, and pollutant control

Oak alone is associated with more than 2,300 species, and studies show that birds such as starling, mistle thrush, fieldfare, and skylark benefit from trees in farmed landscapes. Bats, mice, voles, and shrews do too, and shade trees can increase the abundance or diversity of spiders, flies, bees, butterflies, moths, beetles, and earthworms.

Shade trees also contribute to reducing emissions and increasing carbon storage. One tree alone may not sound significant, but when we look at farmland as a whole, 69% of land in the UK, the potential becomes clear.

Currently farming releases around 47.7 metric tons of greenhouse gases annually in the UK, roughly 13% of total emissions. The Committee on Climate Change has highlighted that integrating trees into just 0.6% of agricultural land could make a significant contribution towards meeting the 2030 carbon budget.

The soil benefits too. Trees diversify the soil microbiome, break up compacted ground, and bring life back into fields. Leaf litter adds organic matter and locks more carbon into the soil, while roots prevent erosion. By increasing nitrogen-fixing bacteria and improving nutrient cycling, trees help prevent agricultural runoff from polluting streams, rivers, and sensitive habitats. They also help hold more water on the land, reducing flood risk for nearby homes and businesses.

Farms themselves benefit as the climate becomes more extreme. Animal welfare is a major issue, and providing shade and shelter will become increasingly important. Studies show that cattle and sheep both do better, even outside extreme conditions, when shade trees are available.

By reducing heat stress and providing shelter from wind and rain, shade trees improve quality of life, with increased infant survival, reproductive success, and milk production in cattle. Better forage quality also contributes to healthier animals. Farmed animals often browse trees, and that wider range of food is better than grass alone. Even hens have been shown to benefit from ranging on land with tree cover, with improved laying rates and shell density.

Arable farms can also gain from trees. Farms that diversify products can increase production through shade trees that offer a secondary crop of fruit, nuts, or timber. This diversification supports farm businesses throughout the year and helps smooth the peaks and troughs of seasonal demand.

What Can I Do?

Plant a tree. The right tree in the right place can achieve a huge amount.

If you are not a farmer or do not have land suitable for planting on farmland, you can still plant through Protect Earth. We work with farmers and landowners who want to make a difference but cannot give up land for a woodland. Shade trees are achievable for almost everyone, whatever their land is used for.

You can sponsor a shade tree in our shop and help put more biodiversity back into Britain’s farmed landscapes.