Conditional — Some Areas
cowpea (zones 3-12) has limited zone overlap with Hawaii (10a-13a). Only zones 10-12 in the state are suitable.
Your yard isn't the whole zone.
Black-Eyed Pea is grown as an annual, so your winter zone isn't the deciding factor — your frost-free window is, and slope, trees, and low spots move the last-frost date across a single yard. Enter your address and we'll score black-eyed pea against your parcel's actual frost dates, sun, and soil.
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Zone Comparison
Black-Eyed Pea Needs
- USDA Zones: 3-12
- Soil pH: 4 - 8.8
- Sun: Full Sun
- Drainage: well (dry spells)
- Frost-Free Days: 30+
Hawaii Has
- USDA Zones: 10a-13a
- Last Frost: None
- First Frost: None
- Annual Rainfall: 10-400 inches
- Common Soils: Volcanic, Laterite, Coral sand
Plant Zone Range (zones 3-12)
Preferred Soil pH
Plant data: USDA PLANTS Database / plant_species_v5.csv. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
Growing Season Fit
Zone compatibility says you can survive winter here. Whether the growing season is long enough — and warm enough — is a different question.
Frost-free days
Black-Eyed Pea wants 30+ frost-free days; a typical Hawaii site sees ~350 (NOAA Climate Normals). That leaves comfortable headroom for succession planting.
Growing degree days
Black-Eyed Pea needs ~2000 GDD (base 50°F) to ripen. The state median runs ~6500 GDD (USDA NRCS county aggregates), so Hawaii's typical season clears that easily.
Climate aggregates derive from USDA NRCS county-level hardiness data + Cornell CALS Extension GDD-by-region tables + MSU Extension chill-hours-by-zone (1991-2020 NOAA Climate Normals baseline).
Soil + Drainage Fit
Black-Eyed Pea likes near-neutral soil (pH 4-8.8). That's the common-ground band across Hawaii's volcanic and laterite — a soil test confirms it for your site. Drainage matters: this plant wants well (dry spells). If your Hawaii site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Plant pH and drainage requirements from USDA PLANTS Database. Hawaii soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Black-Eyed Pea in Hawaii — Quick Answer
- Verdict: Conditional — Some Areas
- Plant Zones: 3-12 (USDA PLANTS Database)
- State Zones: 10a-13a (USDA ARS PHZM 2023)
- Growing Season: None to None (NOAA Climate Normals)
- Days to Maturity: 70 days
What Else to Consider
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
Your side of the island decides everything — check your exact spot's rainfall before choosing crops.
Volcanic soil is nutrient-poor in young flows
A soil test shows what young lava ground is missing — compost and targeted amendments close the gap fast.
Invasive species pressure is severe
Source clean plant material and learn the current watch list — your extension office is the authority on what to keep out.
Where in Hawaii Fits Best
Even within Hawaii's zones 10a-13a, county microclimates differ enough to change what thrives. These counties carry the closest zone match for black-eyed pea (USDA PHZM 2023):
Pollinator + Wildlife Value
Black-Eyed Pea draws pollinators (moderate value, USDA PLANTS Database). Planting it near vegetable beds can lift fruit set on neighboring crops.
Hawaii Cooperative Extension
For Hawaii-specific cultivar recommendations, planting calendars, and pest pressure for black-eyed pea, the canonical source is UH Mānoa CTAHR Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Black-Eyed Pea native to Hawaii?
No — the USDA PLANTS Database lists Black-Eyed Pea 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 USDA-documented natives for the state.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Black-Eyed Pea in Hawaii
When can I plant Black-Eyed Pea in Hawaii?
Hawaii's last spring frost runs none and first fall frost none (NOAA Climate Normals 1991-2020). Time outdoor planting to after the last-frost window for your specific site, and pull from those dates for transplant scheduling.
What hardiness zone is Black-Eyed Pea grown in across Hawaii?
Hawaii spans USDA hardiness zones 10a-13a (USDA ARS PHZM 2023). Black-Eyed Pea carries a range of zones 3-12, 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 ~350 frost-free days per year (derived from NOAA Climate Normals 1991-2020). Black-Eyed Pea needs 30+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Black-Eyed Pea native to Hawaii?
No — the USDA PLANTS Database lists Black-Eyed Pea 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 Black-Eyed Pea in Hawaii?
Black-Eyed Pea prefers pH 4-8.8 and well (dry spells) drainage (USDA PLANTS Database). That sits in the common-ground band across Hawaii soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Black-Eyed Pea actually grow on my specific land in Hawaii?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores black-eyed pea 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 Hawaii
State-level data is a sketch. Your Growable Ground report scores black-eyed pea against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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