Yes, deer eat arborvitae foliage and can leave the lower part of a hedge bare, especially where winter food is limited. Protect vulnerable plants before repeated browsing removes their green growth. Repellents and variety choice may help, but neither guarantees protection.
Confirm what caused the damage
Look for missing shoots with ragged ends, nearby tracks and a browsed band along the accessible part of the plant. Antler rubbing can damage bark as well. Minnesota’s arborvitae diagnostic guide distinguishes deer feeding from notched insect feeding.
Browning alone is not proof of deer. Inspect whether foliage was actually removed, and consider weather, moisture and other plant problems. Take photographs of the whole hedge and close views of the damage before choosing a treatment.
Keep deer from reaching the foliage
For a small planting, a securely supported enclosure can keep browsing away from the branches. Leave enough space that shoots cannot be reached through the barrier. A trunk guard protects bark; it does not automatically protect the surrounding foliage.
For a whole hedge or yard, choose a deer-fence design suited to terrain and local pressure. Minnesota Extension identifies exclusion as the most effective approach and emphasizes checking gates and damage. Snow changes the height from which an animal can reach, so inspect protection through winter.
Do not tightly bind the entire living canopy in an improvised wrap or leave loose netting where it can entangle animals. Secure and inspect a barrier according to its design, allowing for plant growth and maintenance access. Check local fence requirements before purchasing a large installation.
Protection can be seasonal where the risk is seasonal. Remove or adjust temporary materials when appropriate, but do not assume every hedge becomes safe on a fixed spring date. Continue watching for new browsing.
Use repellents with realistic expectations
Choose a product labeled for the ornamental plants and setting, then follow its application and reapplication directions. Weather, new growth and deer pressure influence performance. There is no single four-to-eight-week interval that fits every product.
A homemade egg-and-garlic mixture should not be presented as equivalent to a tested product or a physical barrier. If damage continues, reassess access instead of mixing a stronger spray. Keep the product label available for whoever maintains the hedge.
Instructions for ornamentals do not automatically transfer to food crops. If blueberry bushes also need protection, check edible-crop permissions separately rather than applying the same spray everywhere.
Will a browsed arborvitae fill in again?
Do not promise that a severely bare section will regain its original density. Extension advice on extensively browsed arborvitae cautions that foliage may not regrow in the damaged area. Remaining green growth and the extent of injury matter.
Protect surviving foliage and have a qualified arborist assess major damage. Avoid cutting farther into bare old wood in an attempt to stimulate a quick recovery. Extra fertilizer cannot replace missing branches or prevent another animal visit.
For a privacy hedge, compare the practical options: retain a partly damaged plant, redesign the lower planting, or replace it with a suitable protected alternative. Make that decision after assessing the whole row, not only one close-up photograph.
Choose replacements for the site as well as deer pressure
Arborvitae species and cultivars differ, but no named selection should be sold as deer-proof. Check exact identity, mature dimensions, climate, drainage and local browsing experience. Do not assume all western arborvitae or every “Green Giant” planting will remain untouched.
Ask a local nursery or Extension office for suitable lower-risk alternatives. A replacement that becomes too large or struggles in the soil is not an improvement simply because deer usually avoid it. Plan the protection and ongoing access along with the plant purchase.
