Generally — Most Areas
ostrich fern (zones 3-7) suits most of New Jersey (6a-8a) — zones 6-7 are in range, and the rest of the state is the exception.
Ostrich Fern in New Jersey — the short answer
Ostrich Fern in New Jersey: hardy in zones 3–7, shade, against a state median of ~222 frost-free days.
- Plant zones
- 3-7
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- New Jersey zones
- 6a-8a
- USDA PHZM 2023
- Frost window
- Mar 26 - Apr 4 – Nov 5 - Nov 17
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 196 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — per-field provenance varies and is published with the dataset.
Your yard isn't the whole zone.
New Jersey spans zones 6a-8a, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score ostrich fern against your parcel's actual hardiness, soil, and sun.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
New Jersey is not one climate
New Jersey’s winter-low ladder runs across 21 counties, from zone 6.5 in Morris County to zone 7.5 in Salem County. That is 10°F between the two counties’ average coldest night — the difference between ostrich fern overwintering in the ground and coming under cover.
The middle half of 21 counties runs 7–7 zones, with a median of 7 zones — a 1-zone span end to end.
Measured across 21 New Jersey counties. USDA PHZM 2023, per county. Quartiles are order statistics — every figure shown is a value a real county recorded, not an interpolation. Your own site sits somewhere inside this range; a parcel report resolves where.
Where in New Jersey Fits Best
Ostrich Fern is rated for zones 3–7 — a cold floor USDA puts at -40 to -30°F. Against New Jersey’s 21 counties that band holds in 16 of them, and the line runs at Morris County (zone 6b), the coldest county still inside it.
Inside zones 3–7
16 counties
- Sussex County · zone 6b
- Warren County · zone 6b
- Atlantic County · zone 7a
3 of 16 shown
Above the zone 7 ceiling
5 counties
- Cape May County · zone 7b
- Cumberland County · zone 7b
- Gloucester County · zone 7b
3 of 5 shown
Too little winter chill rather than too much cold — a low-chill selection is what changes it.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. A zone is a 10°F band of average annual extreme minimum temperature, so the floor above is the band the plant's rating denotes, not a single measured kill point. Slope, shelter and cold-air drainage routinely move a site half a zone either way from its county figure — which is the part only your address resolves.
Even within New Jersey's zones 6a-8a, county microclimates differ enough to change what thrives. These counties carry the closest zone match for ostrich fern (USDA PHZM 2023):
Zone Comparison
Ostrich Fern Needs
- USDA Zones: 3-7
- Sun: Shade
- Mature size: 5 ft tall
- Drought tolerance: Low
New Jersey Has
- USDA Zones: 6a-8a
- Last Hard Freeze (28°F): Mar 26 - Apr 4
- First Hard Freeze (28°F): Nov 5 - Nov 17
- Annual Rainfall: 40-50 inches
- Common Soils: Sandy loam (Pine Barrens), Silt loam, Clay
Plant Zone Range (zones 3-7)
Preferred Soil pH
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS, and university Extension sources — per-field provenance varies and is published with the dataset. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Ostrich Fern in New Jersey
The frost window
Across New Jersey, the last spring hard freeze (28°F) clears between Mar 26 and Apr 4, and the first fall hard freeze lands between Nov 5 and Nov 17 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 215-day window you can count on — up to 236 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
Winter standing
New Jersey runs as cold as USDA zone 6, and no sourced winter-hardiness floor is on record for ostrich fern, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether ostrich fern is a permanent planting or a replant-every-spring crop for you turns on your own zone within New Jersey; check its hardiness range against that before treating it as long-lived ground.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: Growable Ground Plant Database — frost-free days from FAO ECOCROP, days to harvest from university Extension production guides, and growing-degree-day and chill-hour minimums that are compilation estimates rather than published figures. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Soil + Drainage Fit
Ostrich Fern likes near-neutral soil (pH 5-7). That's the common-ground band across New Jersey's sandy loam (pine barrens) and silt loam — a soil test confirms it for your site. It will grow across that whole span, but it does best between pH 5.5 and 6.5 — worth knowing before you decide whether a New Jersey soil test result is a problem or just a number. Drainage requirement: poorly (saturated >50% of year). A soil-survey lookup (NRCS SSURGO) flags whether your specific site matches.
Plant pH requirements: FAO ECOCROP and USDA PLANTS, with the remaining rows from other published sources or Growable Ground compilation. Drainage: FAO ECOCROP, with the remaining rows from other published sources or Growable Ground compilation. New Jersey soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Ostrich Fern in New Jersey
Zone compatibility tells you about winter cold survival — but New Jersey growers also need to think about:
Sandy Pine Barrens soils are nutrient-poor
Urban heat island effects in northern NJ
Deer browse is extreme in suburban areas
What to actually do about these — and the constraints that apply to every New Jersey grower, not just ostrich fern — is covered on the New Jersey growing guide.
Where in New Jersey Ostrich Fern Is Zone-Hardy
Ostrich Fern is rated for USDA zones 3–7. 16 of New Jersey’s 21 counties fall inside that band. The coldest that does is Morris County at zone 6b. 5 counties sit above its zone 7 ceiling, where the limit is too little winter chill rather than too much cold. Where you are in New Jersey decides this one.
Across those 21 counties New Jersey’s winter-low ladder runs from zone 6b in Morris County to zone 7b in Salem County — 1 USDA zone of spread, which is 10°F between the two counties’ average coldest night of the year. That is why a statewide hardiness answer is where you start and not where you finish.
The planting window moves with it. Sussex County holds its last hard freeze (28°F) until about Apr 11, while Salem County is clear by Mar 20 — 22 days apart. Set ostrich fern out on your county’s date, not the state’s.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F killing freeze — earlier than the folk 32°F "last frost". Ostrich Fern’s zone 3–7 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Pollinator + Wildlife Value
Deer pressure is meaningful across much of New Jersey; ostrich fern is listed as deer-resistant (USDA PLANTS Database), which makes it a safer pick for unfenced sites. Our deer & wildlife guide carries the full deer-resistant list and how to protect the rest.
New Jersey Cooperative Extension
For New Jersey-specific cultivar recommendations, planting calendars, and pest pressure for ostrich fern, the canonical source is Rutgers Cooperative Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Ostrich Fern native to New Jersey?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Ostrich Fern as native to New Jersey. Planting it supports the pollinators and wildlife that evolved alongside it.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Ostrich Fern in New Jersey
When can I plant Ostrich Fern in New Jersey?
New Jersey's last spring hard freeze (28°F) clears between Mar 26 and Apr 4, and the first fall hard freeze lands between Nov 5 and Nov 17 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for Ostrich Fern, so this page does not state whether it overwinters in New Jersey and publishes no fall establishment date for it — check its hardiness range against your own zone before treating it as a permanent planting.
What hardiness zone is Ostrich Fern grown in across New Jersey?
New Jersey spans USDA hardiness zones 6a-8a (USDA ARS PHZM 2023). Ostrich Fern carries a range of zones 3-7, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical New Jersey site have?
A typical New Jersey site sees ~222 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Ostrich Fern should be matched against that window, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Ostrich Fern native to New Jersey?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Ostrich Fern as native to New Jersey. Planting it supports the pollinators and wildlife that evolved alongside it.
How should I amend the soil for Ostrich Fern in New Jersey?
Ostrich Fern prefers pH 5-7 and poorly (saturated >50% of year) drainage (Growable Ground Plant Database). That sits in the common-ground band across New Jersey soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Ostrich Fern actually grow on my specific land in New Jersey?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores ostrich fern against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in New Jersey
State-level data is a sketch. Your Growable Ground report scores ostrich fern against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that New Jersey ostrich fern averages can't show:
We read public map data around New Jersey — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the New Jersey ostrich fern average
Explore More
Growing guides for ostrich fern
Explore New Jersey county by county
New Jersey carries 21 counties with their own USDA zone — a sample of the growing pages for ostrich fern there:
Where else ostrich fern grows
Ostrich Fern's zone band crosses state lines — these are the states closest to New Jersey in winter climate where it also has a page, plus the far ends of its range. Each one re-answers the question with that state's own record.
More to grow in New Jersey
New Jersey has a growing page for 1,020 plants — a rotating sample of the rest of the shelf.
Last updated: