Keeping Deer Out of a Scottish Garden

The only real defence against deer is a properly built fence: 1.8m high for roe, fallow and sika, 1.9m for red deer, with mesh gaps no wider than 200 x 150mm (roe) or 220 x 200mm and a base dug in or pegged down. Everything else, from sprays to scarers to plant lists, only shifts the odds. The plants that suffer are rarely the ones you are watching in high summer. Winter is when browsing pressure bites hardest, because natural forage has thinned out and deer try plants they would otherwise ignore. A hosta bed that sailed through July can be stripped back in February, and a shrub border that looked deer-proof all growing season can show bark stripped once the surrounding land stops offering much else.

There's a second seasonal pattern. Male deer rub their antlers on young stems and saplings to remove velvet and mark territory, which shows up as "fraying" damage to trunks and can happen well before winter. Winter browsing and territorial rubbing are two different mechanisms on two different clocks, which is one reason deer are harder to plan against than most garden pests. In most cases a deer in a suburban garden is not a danger to you, since they avoid people. The thing to act on is the damage to plants.

Identifying deer damage

Scotland has four deer species: red and roe, its two native species, widespread and abundant, and fallow and sika, established through historic introductions and escapes and more concentrated around their historic release areas. Sika can hybridise with red deer, which is one reason deer numbers are managed. Deer-in-gardens advice written for England is usually built around muntjac, the smallest and most urban-adapted species. Muntjac are not thought to be established in Scotland, so red and roe are the more realistic starting assumption for a Scottish garden, with roe the one most often found close to towns. A neighbour, ranger service or nearby estate is often a faster way to confirm which species is local than guessing from a map.

Deer damage has a distinct signature that separates it from rabbits or squirrels:

• Browsing: Shoots and tips nipped off, leaving a ragged, torn edge (deer have no upper incisors, so they tear rather than cut cleanly the way rabbits do)
• Fraying: Bark rubbed from young tree trunks in tatters, caused by males scraping antlers to shed velvet, mainly in summer
• Thrashing: Woody stems and low branches whipped and broken by antlers, a male behaviour associated with the rut
• Bark-stripping: Winter damage: deer eat tree bark outright once other food has become scarce, and growth above the damaged point often dries and dies

Often the deer are never seen, because most feeding happens between dusk and dawn, and the damage pattern is the only evidence you get. Low damage, under about 50cm, that looks cleanly cut rather than torn is more likely rabbits.

What's folklore and what works

As with foxes, badgers and squirrels, deer deterrents split sharply between things people swear by and things with evidence behind them:

Soap bars and blood meal are repeated widely online, but neither is a recognised deterrent. Offering deer natural food elsewhere, such as brambles and rosebay willowherb, is one way the British Deer Society suggests reducing pressure on ornamentals.

Deer-resistant plants: shifting odds, not a guarantee

A survey of 740 gardeners found some plants with a 20% or lower chance of being damaged: buddleja, daffodils and snowdrops, lavender, nepeta and rosemary among them, with hellebores for shade, herbaceous peonies for sun, skimmia for shrubs, jasmine for climbers and, useful on an edibles plot, rhubarb. The survey covers UK gardens, not Scottish ones, so treat it as a general steer. It is a probability shift, not protection: a plant undamaged in one garden may be a favourite in another, damage shifts with the time of year, and plants nearer the house are less often damaged.

The British Deer Society's list of plants deer tend to avoid (they leave them alone when other food is available) includes several that are common in Scottish gardens: alder, birch, box, buddleia, forsythia, foxglove, hellebore, honeysuckle, jasmine, juniper, lavender, magnolia, pine, Potentilla fruticosa, Spiraea japonica, deciduous viburnum and weigela. Its vulnerable list includes bluebell, clematis, fuchsia, hosta, hydrangea, iris, pansy, poppy, primula and rose. Runner beans, raspberries, strawberries, blackberries, beetroot, tulips, evergreen azaleas, rhododendrons, holly, hardy geraniums and fruit tree bark in winter are also often heavily damaged. The two lists differ in places, and lupin appears on both of the British Deer Society's, so a plant list is a way to load the odds, not a substitute for a fence where damage risk is already high.

Fencing, sized to the deer, not the garden

Deer jump, and they will also squeeze through gaps and lift loose wire at the base of a fence. The defining fact is the jumping: and different species clear different heights, so fence height is the single most important decision and varies by species rather than being one "deer-proof" number.

These are the British Deer Society's minimum fencing specifications. The RHS figures are close: 1.8m for the larger species, with a maximum mesh of 20 x 15cm, and a heavy-duty wire such as sheep or pig fencing in the lower half of the fence.

• Mesh gaps matter as much as height. Horizontal strands of plain or barbed wire aren't a substitute for proper mesh, because roe deer can squeeze through gaps as small as 30cm.
• Avoid lightweight plastic mesh. It isn't robust enough, and deer can become tangled in it, a welfare problem as well as a fence failure. A deer found injured or trapped in fencing or netting is a Scottish SPCA matter, not something to free or treat yourself.
• The base is a weak point. It should be dug or turfed in comprehensively, or pegged to the ground, so deer can't lift the wire and squeeze underneath. The fence also needs to be properly tensioned.
• Young trees and shrubs need their own protection even inside a boundary fence, at least until established: netting guards or rigid tubes, staked firmly and sized to the deer species locally present.
• A few vulnerable perennials don't need a perimeter fence. For hostas, the classic case, an individual netting cage works at plant scale, or a "dead hedge" of cut branches (brash) piled around the plant while it is vulnerable, which lets the plant grow through and deters deer.
• Full exclusion fencing is a real capital cost and not a weekend DIY job at 1.8 to 1.9m around a boundary. Get more than one local contractor's quote, since ground conditions and gate requirements swing the total. Check with your local council before starting, as a fence this tall is well above an ordinary garden fence and boundary rules can vary.

Tree and shrub guards need less height than a boundary fence: at least 1.6m for fallow deer and 1.2m for roe and muntjac.

Skip electric fencing: it is often ineffective against deer and may be damaged if they are startled and try to run through it, the same panic-and-crash failure that makes lightweight plastic mesh a bad choice. A tall, dense hedge with a ditch on the outside can work instead of a built fence, provided it is solid enough that deer can't push through.

Scotland's legal position

NatureScot is Scotland's nature agency and holds statutory responsibility for the conservation, control and sustainable management of wild deer. Its deer material is built around landscape-scale management: cull data, deer management groups, licensing for professional deer managers and incentives for reducing high roe and sika numbers in specific regions. It doesn't cover garden fencing, repellents or plant choice, so for "how do I keep deer off my roses" it isn't the place to go.

The relevant law is the Deer (Scotland) Act 1996. Section 26 gives an occupier of arable land, improved permanent pasture, regenerated agricultural land or enclosed woodland the right to take or kill deer that are causing, or are reasonably believed likely to cause, serious damage to crops, pasture or stored produce, either personally or through a written authorisation to specific other people. That right does not apply during the close season for each species and sex, and Section 5 gives Scottish Ministers the power to fix those seasons by order rather than setting dates in the Act itself. The section is built for agricultural ground, not domestic gardens, and lethal control isn't a realistic or appropriate response for an ordinary garden. For a garden the practical and legal path is exclusion: fencing, plant choice and the deterrents graded above.

If you're dealing with other garden wildlife

If browsing damage sits low and looks cleanly cut, see Keeping Rabbits Out of a Scottish Garden. For the other common pressures, see Foxes and Badgers in a Scottish Garden and Red Squirrels in Your Garden.

Common questions

Sources