For many woodland owners, spotting a grey squirrel darting through the canopy feels like part of the British countryside. Unfortunately, beneath that familiar sight lies one of the biggest threats to productive broadleaf woodland.
Grey squirrels were introduced into Britain in the late 19th century and have since spread across much of England and Wales. Today they’re recognised as an invasive non-native species, causing significant damage to woodland through bark stripping, reducing timber quality and putting decades of woodland investment at risk.
For estate owners, farmers and private woodland managers, squirrel control isn’t simply about pest management. It’s about protecting the long-term health, resilience and value of the woodland itself.
Why are grey squirrels such a problem?
Grey squirrels cause the greatest damage to broadleaf species including oak, beech, sycamore, sweet chestnut and maple. During late spring and summer, they strip bark from growing trees to feed on the nutritious layer beneath, and the damage can have lasting consequences.
Young and semi-mature trees are particularly vulnerable. Once bark has been removed around the stem or major branches, trees become susceptible to disease, decay and structural weakness. Even where trees survive, timber quality can be significantly reduced, limiting future commercial returns.
Over time, repeated squirrel damage can alter the species composition of a woodland, making it more difficult to establish productive broadleaf crops.
Early signs are easy to miss
One of the biggest challenges is that squirrel damage often develops gradually.
Many woodland owners don’t realise there’s a problem until bark stripping becomes widespread. By then, years of growth may already have been compromised.
Regular inspections are essential, particularly during the main damage period between May and July. Looking across all age classes, from recently planted trees through to mature woodland, helps identify problems before they become extensive.
A trained eye can also distinguish squirrel damage from other types of damage, such as from storms or disease, ensuring management efforts are directed appropriately.
Why monitoring matters
Effective squirrel control starts with understanding the scale of the problem.
Rather than reacting to occasional sightings, it’s important to build up a clear picture of population levels, damage hotspots and the woodland compartments most at risk.
Professional woodland surveys typically involve systematic inspections across the site, recording both historic and recent bark damage, mapping affected areas and identifying where control measures will have the greatest impact.
This information forms the basis of a practical Squirrel Management Plan and provides valuable evidence for ongoing woodland management.
Taking a long-term approach
There is no single solution to squirrel control. Successful management usually combines several approaches carried out consistently over time. Population monitoring, bait stations, humane control methods and regular woodland inspections all have a role to play.
Importantly, squirrel management shouldn’t be viewed as a one-off exercise. Woodland owners who achieve the best results tend to treat it as part of their wider woodland management programme.
Consistency almost always delivers better outcomes than occasional intensive control.
Stewardship and grant opportunities
For many woodland owners, squirrel management can also form part of a wider funded management programme.
Where woodland is eligible, grants may be available to support monitoring and control activities. These schemes often require clear evidence that squirrel populations are being actively managed and that work is being properly recorded.
Having a well-prepared Woodland Management Plan, supported by a robust Squirrel Management Plan, can help ensure both compliance and practical success on the ground.
Professional advice can also help landowners identify opportunities for funding while ensuring management remains proportionate and effective.
Protecting woodland for the future
Woodland takes decades to establish but only a few seasons of squirrel damage to significantly reduce its potential.
Whether your objectives are producing quality timber, improving biodiversity, creating a resilient woodland for future generations or supporting a wider estate strategy, squirrel management should be considered an essential part of responsible woodland stewardship.
By identifying problems early and adopting a planned, long-term approach, landowners can protect both the health of their woodland and the investment it represents.
How Evergreen Rural can help
At Evergreen Rural, we work with woodland owners across the South East to develop practical woodland management strategies that protect and enhance their woodlands for the long term.
From woodland surveys and Squirrel Management Plans to Woodland Management Plans, grant applications and ongoing forestry advice, we help landowners make informed decisions that support healthier, more resilient woodlands.
If you’re concerned about squirrel damage, or would like advice on protecting your woodland, get in touch with the Evergreen Rural team to discuss the best approach for your site.
