Updated on September 7, 2026. Ratings below are university browse lists, not a nursery tag. Confirm the current lists on the linked extension pages before you treat a fern bed as a fence.
Rarely. Iowa State Extension, compiling Rutgers, Cornell, and Michigan State surveys (last reviewed July 2022), puts a footnote on its fern table that almost no other plant group gets: nearly all species of ferns are not browsed on by deer. The named rarely-damaged column includes ostrich, Christmas, Japanese painted, lady, wood, cinnamon, royal, sensitive, and hay-scented ferns. Cornell Cooperative Extension of Oneida County’s 2012 list and UGA Circular 985 put the same natives in the rarely-browsed herbaceous column. That is the opposite of hostas, which Iowa State files as frequently severely damaged.
This is a garden-plant page, not a wild-diet page. For how deer actually feed in woods and fields, start with what deer eat. For the rest of the planting list, use the deer-proof garden guide.
| Plant | Garden ferns: ostrich, Christmas, Japanese painted, cinnamon, royal, lady, autumn, wood. Hay-scented, New York, and bracken carpets are a woods problem — deer skip those too, which is why they take over. |
|---|---|
| Verdict | Rarely eaten. Plant them as the shade backbone, not as a decoy to save hostas. No fern is deer-proof in a lean winter. |
| University rating | Iowa State: rarely damaged; “nearly all species.” Rutgers A on Christmas, cinnamon, ostrich, Japanese painted, hay-scented, wood, sensitive, royal. UGA C985: Christmas, cinnamon, royal rarely browsed. NC State: Christmas fern highly deer-resistant; white-tailed deer may nibble without wrecking the clump. |
| What they eat, when | Almost never mature fronds. Occasional nips on spring fiddleheads. Evergreen Christmas fern is the winter plant a hungry herd can still reach. Dawn and dusk traffic follows deer feeding times — they walk the ferns to reach the hosta bed. |
| Where it is worst | Not a browse problem. Worst damage is trampling on a travel path, or a hay-scented / bracken carpet in Pennsylvania woods that deer created by skipping ferns and eating everything else. |
| Official sheets | Iowa State — susceptibility of plants to deer damage · Rutgers NJAES deer-resistance list · UGA Circular 985 · NC State — Christmas fern · Penn State — fern understories |
What a fern is, and which ones belong in a yard
Ferns make spores, not flowers. Fronds unroll from fiddleheads in spring, and the plant lives from a crown or rhizome at soil level — which is why a browsed fern usually comes back.
NC State’s plant toolbox is the culture sheet for the two ferns suburban shade beds actually use. Christmas fern is an eastern-North-American evergreen, 1 to 3 feet, clumping, slow, hardy roughly Zones 3–9. Leathery fronds stay green at Christmas. It wants part to full shade and drainage — NC State flags crown rot in poorly drained winter soil, not deer. It is tagged deer-resistant and rabbit-resistant. The wildlife note is honest: white-tailed deer will occasionally browse it but not damage it.
Ostrich fern is the tall vase: 3 to 5 feet, wet-soil tolerant, rapid, and aggressive. Stout rhizomes send runners. Penn State Master Gardeners in Philadelphia covered an 8-by-10-foot slope in five years from six clumps. Fiddleheads can be cooked; do not confuse them with bracken. NC State tags ostrich deer-resistant and also weedy. Japanese painted fern is the silver-and-burgundy 18-inch edger Penn State tucks under ostrich; Iowa State and Rutgers both rate it rarely damaged. Autumn fern is the evergreen background when the rest of a woodland bed collapses. Cinnamon and royal ferns are the wet-site natives on the Iowa State and UGA rarely-browsed lists.
Hay-scented fern is on those same lists. Do not plant it as a “native deer-resistant groundcover.” It is the forest problem, not the garden solution. Bracken is worse: USDA ARS flags Pteridium aquilinum for livestock (thiaminase in horses; ptaquiloside in cattle). Cornell’s toxic-plants page puts the highest thiaminase in the rhizomes. That is a livestock note, not a reason to call garden ostrich ferns toxic.
What they eat, and when
Most years they eat none of it. Iowa State’s fern footnote is the grade. The window that still exists is the spring window Minnesota Extension flags for the whole landscape: fat reserves are lowest and a fawn will try a plant once. Tightly coiled fiddleheads are the only tissue that regularly shows a ragged nip. UGA notes that fertilized landscape plants are protein- and moisture-rich, and that deer get about a third of their water from succulent tissue. A fibrous frond is the opposite of that snack. Christmas fern is the winter exception because it is still green. If something is shredded at six inches in January on a deciduous ostrich crown, look at rabbits before you rewrite the deer rating.
Deer vs rabbits vs slugs vs hooves
Minnesota Extension’s field test still applies: deer have no upper incisors, so they grasp and rip. A deer nip is a torn, shredded stub, often above rabbit height, with split-heart prints and oval pellets. Rabbits leave a clean 45-degree cut, usually within a foot of the ground. Full rabbit tactics live on how to keep rabbits out of the garden. NC State already tags Christmas fern rabbit-resistant. That is the usual case, not a force field on a new plug.
Penn State’s Philadelphia fern garden notes that slugs do not seem to like ferns. If the fronds are skeletonized in July with no hoof prints, do not spray egg solids on a slug problem. The damage ferns actually take in a deer yard is often trampling: a habitual path through the shade bed to the hostas beyond. Flattened crowns and heart-shaped tracks, fronds still attached. Walking on them is not eating them. That is a deer-as-pests layout problem, not a palatability problem.
Region: the yard and the woods are different fern stories
Suburban Northeast and Mid-Atlantic lots — New Jersey, Pennsylvania, New York, Maryland — are where Rutgers built the ratings because the herd is dense and every other house planted hostas under a maple. Ferns are the honest swap in that shade. Upper Midwest ostrich and lady ferns get the same Iowa State grade. Southeast Christmas fern country is where NC State and UGA are writing: evergreen, native, useful on a bank.
The woods behind those yards are the unique fern fact. Penn State Extension, citing U.S. Forest Service Forest Inventory, estimated in 2007 that fern-dominated understory covered about 5,800 square miles — 3.7 million acres, just over 20 percent of Pennsylvania’s forest. Hay-scented, New York, and bracken spread by rhizomes into carpets. Penn State’s line: as selective browsers, deer don’t eat fern, but they do eat hardwood seedlings, blackberry, and trillium. Inside deer fences, U.S. Forest Service plots weeded of hay-scented fern held 106,000 desirable seedlings per acre after five years; plots fenced but not weeded fell to 19,000. Black cherry grew 55 inches without fern and 11 inches under it. Light under a fern canopy can drop below 0.5 percent of full sun. If you hunt that country, the trip page is Pennsylvania deer hunting. The yard problem is still the hostas.
What actually works
Plant the fern. Fence the candy.
- Swap the shade bed. Hostas are frequently severely damaged. Ostrich, Christmas, painted, and autumn ferns fill the same niche. That is species choice doing the work, not a spray schedule.
- Match species to the hole. Christmas fern for dryish shade and winter green. Ostrich for wet shade and a slope you do not want to mow — and only if you will edit the runners. Painted fern as an 18-inch edge. Skip hay-scented and bracken on purpose.
- Protect the neighbors, not the ferns. Minnesota’s height for a real enclosure is a woven-wire fence at least 8 feet tall. A 4-foot decorative fence is a step — deer clear that without thinking. Check local height rules. Fence layout: how to keep deer out of garden beds.
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Egg- or capsaicin-based sprays belong on the plants deer actually eat, or on fiddleheads for two weeks in a slammed suburb. Rotate formulas and respray after rain. Which bottles last is on organic deer repellent. Plant the ferns next to the house on a walked path, not as a screen on the woodlot edge that a deer already uses.
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What does not work
A ring of ferns around unprotected hostas. UGA’s circular allows that pungent neighbors can help, and there is no such thing as a deer-resistant plant when food is scarce. Three ostrich ferns will not hide a hosta mound. Hair in bags, bar soap, dryer sheets, and a 4-foot picket fence fail for the same reason they fail everywhere else. Feeding the herd trains them to the property — what to feed backyard deer is the page that says don’t. Planting hay-scented fern because it is “native and deer-resistant” imports a forest problem into a 20-foot bed.
Three substitutes that already earn their keep
Ferns are the shade substitute. If the hole is sun, or you want a flower instead of a frond:
- Peonies — Iowa State: rarely damaged perennial. Big May bloom deer usually skip. They will not give you a north-wall groundcover.
- Daffodils — lycorine, Iowa State rarely damaged bulb, Minnesota’s resistant table. Spring color on the sunny edge of the same bed.
- Zonal geraniums (Pelargonium × hortorum) — on Minnesota’s resistant list. Fuzzy leaf, sharp smell, pots a deer cannot stand under. Not a woodland fern.
Astilbe and hellebore sit on the same lists; we do not have child URLs for them. They live on the deer-resistant perennials list. Short flower shortlist: what flowers deer do not eat. Lavender is the sun-and-gravel version of “rarely eaten,” not a shade plant.
Related plants in the same yard
If deer ignored the ferns and shredded the rest of the strip, believe the ratings. Hostas go first in shade. Hydrangeas are occasionally severely damaged — not a fern swap. Evergreen azaleas take the winter shift. Tulips go in April. Protect or replace the candy. Layout: how to keep deer from eating plants.
FAQ
Are all ferns deer-resistant?
Nearly all commonly grown garden species are rarely damaged on Iowa State, Rutgers, Cornell, and UGA lists. Fiddleheads and evergreen Christmas fern in a hard winter see occasional browsing. Hay-scented, New York, and bracken are also skipped — that is why they carpet Pennsylvania woods, not why you should plant them.
Will ferns grow back if deer eat them?
Usually yes. The crown or rhizome sits at soil level. Losing fronds rarely kills an established clump. Ostrich fern will push more runners than you wanted even if nobody browses it. Christmas fern is slower. Crown rot in wet winter soil, which NC State flags, kills more Christmas ferns than deer do.
Are ferns poisonous to deer?
Bracken is the species livestock sheets flag. USDA ARS: poisonous to cattle, sheep, and horses; thiaminase in horses; ptaquiloside is carcinogenic. Garden ostrich, Christmas, and painted ferns are skipped for texture and poor nutrition, not because one sampled frond poisons a deer. Do not harvest bracken fiddleheads. Ostrich fiddleheads are the edible ones, cooked, from a known plant.
Why are my ferns flattened if deer do not eat them?
Hooves. A travel path through the shade bed to hostas, hydrangeas, or a feeder. Minnesota: deer are creatures of habit and reuse paths. Put a low barrier or stepping stones on the route, move the candy, and stop feeding. Midsummer shredded fronds with no tracks are more often storm, dog, or slug than a deer that suddenly developed a fern habit.
Sources
- Iowa State Extension — Susceptibility of plants to deer damage (ferns rarely damaged; “nearly all species of ferns are not browsed on by deer”; sources: Rutgers, Cornell, Michigan State; last reviewed July 2022)
- Rutgers NJAES — Landscape plants rated by deer resistance (Christmas, cinnamon, ostrich, Japanese painted, hay-scented, wood, sensitive, royal ferns rated A, rarely damaged; no plant is deer-proof)
- Cornell Cooperative Extension of Oneida County — Deer-resistant plants (2012) (Christmas, cinnamon, royal, hay-scented, New York, interrupted, sensitive ferns among herbaceous plants rarely damaged)
- UGA Extension Circular 985 — Deer-tolerant ornamental plants (Christmas, cinnamon, royal ferns among herbaceous perennials deer rarely browse; full review Feb. 1, 2016)
- NC State Extension Gardener Plant Toolbox — Polystichum acrostichoides (Zones 3–9; deer- and rabbit-resistant; occasional browse without damage; crown rot in wet winter soil)
- NC State Extension Gardener Plant Toolbox — ostrich fern (3–5 ft; aggressive rhizomes; edible fiddleheads; deer-resistant; weedy)
- Penn State Extension — Gardening with ferns (ostrich, Japanese painted, autumn, maidenhair in a Philadelphia shade garden; slugs generally skip ferns)
- Penn State Extension — Controlling understory fern competition (2007 USFS FIA: 3.7 million acres / 20% of PA forest fern-dominated; deer don’t eat fern; 106,000 vs 19,000 seedlings/acre; black cherry 55 vs 11 inches)
- University of Minnesota Extension — White-tailed deer damage (torn vs 45-degree cuts; 8-foot woven-wire fence; 50 percent browse cut is a success; reviewed 2026)
- USDA ARS — Western bracken fern (livestock toxin: thiaminase and ptaquiloside; not a garden planting)
- Cornell Department of Animal Science — Thiaminase (bracken rhizomes highest activity)
This is a child of the deer-proof garden guide. Wild browse, not a shade-bed swap, is on what deer eat.
