Conditional — Some Areas
custard apple (zones 11-12) reaches only part of Hawaii (8b-13a): zones 11-12 are in range, so where you are in the state decides it.
Custard Apple in Hawaii — the short answer
Custard Apple in Hawaii: hardy in zones 11–12, full sun.
- Plant zones
- 11-12
- Hardy to zone 11a: USDA PLANTS Database lists 40 °F, converted to zone 11a, checked Oct 2026. Ceiling: our plant database.
- Hawaii zones
- 8b-13a
- USDA PHZM 2023
- Killing freeze
- None on record
- NOAA RCC ACIS 1991-2020
- Shortest county season
- 365 days
- NOAA Regional Climate Centers ACIS station record, 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.
Hawaii spans zones 8b-13a, 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 custard apple 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.
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Hawaii is not one climate
Hawaii’s winter-low ladder runs across 5 counties, from zone 9 in Hawaii County to zone 11.5 in Kalawao County. That is 25°F between the two counties’ average coldest night — the difference between custard apple overwintering in the ground and coming under cover.
The middle half of 5 counties runs 10–11.5 zones, with a median of 10 zones — a 2.5-zone span end to end.
Measured across 5 Hawaii 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 Custard Apple Stands in Hawaii
Custard Apple is rated for zones 11–12 — a cold floor USDA puts at 40 to 50°F. No Hawaii county sits inside it, so in open ground this is a grown-under-cover plant here rather than a bed plant — which is a statement about Hawaii winters, not about custard apple.
Below the zone 11 floor
3 counties
- Hawaii County · zone 9a-13a
- Kauai County · zone 10a-12b
- Maui County · zone 10a-13a
Winter cold is the limit here — the same plant works in a container that comes under cover.
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.
Zone Comparison
Custard Apple Needs
- USDA Zones: 11-12
- Sun: Full Sun
- Drought tolerance: Medium
Hawaii Has
- USDA Zones: 8b-13a
- Hard Freeze (28°F): None on record — year-round season
- Annual Rainfall: 10-400 inches
- Common Soils: Volcanic, Laterite, Coral sand
Plant Zone Range (zones 11-12)
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 Custard Apple in Hawaii
The frost window
Hawaii has none — the 1991-2020 station record carries no 28°F killing freeze, so there is no last-frost date to plant after and no first-frost date to harvest before (NOAA Regional Climate Centers ACIS station record). The growing season is year-round; what paces planting here is rainfall, heat and elevation, not the calendar.
Establishment timing
As a long-lived plant, custard apple can go in any month here. Aim for the start of your wetter season so it establishes on rainfall rather than on irrigation, and give it a year in the ground before judging it.
Frost tenderness
Custard Apple is killed by cold below 32°F (FAO ECOCROP), which simply does not bind at low and mid elevation here. It does bind upslope: Hawaii's summit country genuinely freezes, and no station up there carries a long enough daily record for us to date it.
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
Custard Apple tolerates a wide pH range (pH 4.5-8) — 3.5 units, acid ground through alkaline — so soil acidity is rarely what limits it in Hawaii. A soil test is still worth having, but for what else it tells you about this site, not to clear this plant. It will grow across that whole span, but it does best between pH 5 and 7.5 — worth knowing before you decide whether a Hawaii soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your Hawaii site is heavier clay or sits in a low spot, a raised bed lifts the roots above wet ground, or work in compost.
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. Hawaii soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Before you plant custard apple for food
Anything you grow to eat takes up what is in the ground it grows in, so what is on record near you is worth knowing before custard apple goes in. What follows is Hawaii’s documented federal record at state scale — a screening signal, not a soil test, and not a statement about any one lot.
Safe to Grow Here?
What the federal record shows across Hawaii — and how to grow with it.
We checked the federal record across Hawaii — 2,994 documented sites across 6 of the 8 source types we track.
The most significant on record: 86 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Hawaii carries one of the heavier federal records we track — and that's not a verdict on your yard. Proximity to a documented site is information, not a diagnosis: nothing here says any particular parcel is affected. It does earn one concrete step — before food beds go in the ground, a professional soil test tells you exactly what you're working with, and raised beds of imported, lab-tested soil grow well almost anywhere in the meantime.
Sources Checked
across Hawaii
Severity Distribution
across Hawaii
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Hawaii, Superfund runs higher than the national average — 86 sites across Hawaii. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Sources: EPA, USGS — 950K documented sites tracked nationwide across 8 federal source types.
What Else to Consider for Custard Apple in Hawaii
Zone compatibility tells you about winter cold survival — but Hawaii growers also need to think about:
Extreme rainfall variation — desert on one side, rainforest on the other
Volcanic soil is nutrient-poor in young flows
Invasive species pressure is severe
What to actually do about these — and the constraints that apply to every Hawaii grower, not just custard apple — is covered on the Hawaii growing guide.
Where in Hawaii Custard Apple Is Zone-Hardy
Custard Apple is rated for USDA zones 11–12. No single Hawaii county falls inside it: 0 are colder than the plant’s zone 11 floor and 0 are milder than its zone 12 ceiling. A band this narrow straddles the state rather than sitting inside it.
Across those 5 counties Hawaii’s winter-low ladder runs from zone 9a-13a in Hawaii County to zone 11b-12b in Kalawao County — 3.5 USDA zones of spread, which is 35°F between the two counties’ average coldest night of the year. None of that range reaches the band custard apple needs, so here the statewide answer really is the answer.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. Custard Apple’s zone 11–12 band: Hardy to zone 11a: USDA PLANTS Database lists 40 °F, converted to zone 11a, checked Oct 2026. Ceiling: our plant database.. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Pollinator + Wildlife Value
Custard Apple draws native bees (low value). Planting it near vegetable beds can lift fruit set on neighboring crops. Custard Apple's flowers are not fenced in by a freeze date here: the 1991-2020 record resolves no 28°F killing frost anywhere in Hawaii, so what limits bloom is the plant's own cycle rather than the calendar. Pollinator value: We haven't confirmed this against a published source yet.
Hawaii Cooperative Extension
For Hawaii-specific cultivar recommendations, planting calendars, and pest pressure for custard apple, the canonical source is UH Mānoa CTAHR Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Custard Apple native to Hawaii?
No — the USDA PLANTS Database lists Custard Apple as introduced rather than native in the Lower 48, so it is not part of Hawaii's native flora. It grows here as a garden plant; pairing it with a few Hawaii natives keeps local pollinators fed too.
Looking for plants that belong here? The Hawaii growing guide lists plants that USDA PLANTS records growing in Hawaii and that Kew and NatureServe Explorer both list in its native range, leaving out any that NatureServe flags as exotic there or that our audit holds.
State records: USDA PLANTS Database state-distribution data (presence, not state-level nativity), accessed 2026-10-19.
Common Questions About Growing Custard Apple in Hawaii
When can I plant Custard Apple in Hawaii?
Any month — Hawaii records no 28°F killing freeze in the 1991-2020 station record, so there is no last-frost date to wait for and the growing season is year-round (NOAA Regional Climate Centers ACIS station record). Pace planting by rainfall, heat and elevation instead: the summit country does freeze, and no station up there carries a long enough record to date it.
What hardiness zone is Custard Apple grown in across Hawaii?
Hawaii spans USDA hardiness zones 8b-13a (USDA ARS PHZM 2023). Custard Apple carries a range of zones 11-12, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Hawaii site have?
A typical Hawaii site sees ~365 frost-free days per year (derived from NOAA Regional Climate Centers ACIS station record, 1991-2020). Custard Apple needs 210+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Custard Apple native to Hawaii?
No — the USDA PLANTS Database lists Custard Apple as introduced rather than native in the Lower 48, so it is not part of Hawaii's native flora. It grows here as a garden plant; pairing it with a few Hawaii natives keeps local pollinators fed too.
How should I amend the soil for Custard Apple in Hawaii?
Custard Apple tolerates pH 4.5-8 and well (dry spells) drainage (FAO ECOCROP). That is a 3.5-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a Hawaii site — amend for drainage and organic matter first.
Will Custard Apple actually grow on my specific land in Hawaii?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores custard apple against your address's mapped soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Hawaii
State-level data is a sketch. Your Growable Ground report scores custard apple against your land's mapped soil, modelled sun, drainage, and frost data — not zone averages.
Three things about your lot that Hawaii custard apple averages can't show:
We read public map data around Hawaii — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Hawaii custard apple average
Explore More
Growing guides for custard apple
Explore Hawaii county by county
Hawaii carries 5 counties with their own USDA zone — a sample of the growing pages for custard apple there:
Where else custard apple grows
Custard Apple's zone band crosses state lines — these are the states closest to Hawaii 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 Hawaii
Hawaii has a growing page for 789 plants — a rotating sample of the rest of the shelf.
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