Why Young Plantations Are So Vulnerable

Young plantations are a squirrel’s ideal larder. The trees are small enough for easy access, their bark is thin and sweet, and their developing leaders are packed with nutrients. Grey squirrels, now widespread across most of the UK, are the main culprits. In red squirrel strongholds, the picture is different: reds are protected, so any management must be planned carefully to avoid harm. The risk is greatest where new planting sits next to mature broadleaved woodland, hedgerows, gardens or game cover. These habitats offer shelter, food and travel routes. Damage often peaks in late spring and early summer, when natural seed is scarce and sap is rising.

Recognising Bark Stripping and Shoot Browsing

Bark stripping usually appears as patches of missing bark on the main stem, often between one and three metres above ground. The exposed wood may be smooth, pale or stained, with tooth marks along the edges. Squirrels tend to return to the same trees, so damage spreads. In severe cases, the stem is girdled and the tree dies. Shoot browsing is quieter: the terminal bud and leader shoots are nibbled away, leaving a ragged tip or a forked, multi-stemmed tree. Look for clipped shoots, stripped buds and small piles of gnawed debris. Both types of damage are worse on favoured species such as sycamore, beech, oak, ash and sweet chestnut, though few trees are completely safe.

Tree Guards and Physical Protection

Tree guards are the first line of defence, but they must be chosen and fitted well. For squirrel damage, a sturdy mesh guard at least 1.2 metres tall is a good starting point; 1.5 metres is better where bark stripping is common. Bury the base 5–10 cm into the soil to stop rodents digging under. Secure the guard to a stake, not the tree, and leave a small gap so the stem can move. Squirrels can leap from neighbouring trees, so guards work best in open, well-spaced planting.

• Check guards each spring and autumn.
• Replace broken ties and straighten bent guards.
• Remove any guard that is rubbing the stem.
• Clear vegetation around the base and remove overhanging branches within three metres.
• In red squirrel areas, use guards rather than traps as your main tool.

Habitat Balance and Landscape Design

Habitat balance is about reducing the pressure on young trees. Grey squirrels thrive where there is a reliable supply of mature seed, supplementary food and safe cover. Keep bird feeders and game feeders away from new plantations, or use squirrel-proof designs. Avoid planting young trees immediately downwind of large beech, oak or sycamore stands. Instead, create a buffer of less favoured species such as birch, alder or rowan. A mosaic of age classes helps: if you have mature trees, retain them, but do not let them form an unbroken canopy next to new planting. Manage hedgerows and scrub so they do not act as squirrel highways into the wood. Encourage natural predators by leaving deadwood, rough grass and mature trees, but do not rely on them alone. In the long run, a diverse, well-structured wood is more resilient.

Humane Monitoring and Targeted Action

Monitoring tells you whether damage is rising, falling or staying local. Walk a fixed route each month and record the number of damaged trees, the height of damage and the species affected. Trail cameras or feeding stations can confirm squirrel activity, while drey counts in winter give a rough index of numbers. In vulnerable areas, targeted humane control may be necessary. Grey squirrels are an invasive non-native species, and it is illegal to release them into the wild. Live traps must be checked at least twice daily, shaded, and protected from rain and predators. Dispatch must be carried out humanely by a competent person, following current legal guidance. Work with neighbours so that control is coordinated across boundaries, and stop if red squirrels are present. Always record what you do, so you can judge whether it is working.

A Year-Round Routine for Woodland Owners

In autumn and winter, assess last season’s damage, count dreys and plan guard repairs. Late winter is a good time to check stakes, ties and guards before growth starts. In spring and early summer, watch for fresh bark stripping and browse, especially after a hard winter. Summer is for recording and for clearing vegetation around guards. Autumn planting is the moment to fit new guards and widen buffers. Keep a simple map of hotspots and share it with your neighbours. With patient observation, good guards and a balanced habitat, young plantations can grow through the vulnerable years. Squirrels will always be part of the woodland, but they need not decide which trees survive.