Yes — Strong Match
asystasia (zones 10-13) fits entirely within Hawaii's zone range (10a-13a).
Your yard isn't the whole zone.
Hawaii spans zones 10a-13a, but your yard has its own microclimate — slope, trees, and low spots shift frost and sun across a single parcel. Enter your address and we'll score asystasia against your land's actual soil, sun, and frost.
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Zone Comparison
Asystasia Needs
- USDA Zones: 10-13
- Soil pH: 3.5 - 5
- Sun: Part Sun
- Drainage: poorly (saturated >50% of year), well (dry spells)
- Frost-Free Days: 42+
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 10-13)
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
Asystasia wants 42+ frost-free days; a typical Hawaii site sees ~350 (NOAA Climate Normals). That leaves comfortable headroom for succession planting.
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
Asystasia prefers acidic soil (pH 3.5-5). Hawaii's volcanic can run on the acidic side, which often aligns well — confirm with a soil test before planting. Drainage matters: this plant wants poorly (saturated >50% of year), 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.
Asystasia in Hawaii — Quick Answer
- Verdict: Yes — Strong Match
- Plant Zones: 10-13 (USDA PLANTS Database)
- State Zones: 10a-13a (USDA ARS PHZM 2023)
- Growing Season: None to None (NOAA Climate Normals)
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 asystasia (USDA PHZM 2023):
Pollinator + Wildlife Value
Asystasia 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 asystasia, the canonical source is UH Mānoa CTAHR Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Asystasia native to Hawaii?
No — the USDA PLANTS Database lists Asystasia 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 Asystasia in Hawaii
When can I plant Asystasia 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 Asystasia grown in across Hawaii?
Hawaii spans USDA hardiness zones 10a-13a (USDA ARS PHZM 2023). Asystasia carries a range of zones 10-13, 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). Asystasia needs 42+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Asystasia native to Hawaii?
No — the USDA PLANTS Database lists Asystasia 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 Asystasia in Hawaii?
Asystasia prefers pH 3.5-5 and poorly (saturated >50% of year), well (dry spells) drainage (USDA PLANTS Database). Most Hawaii soils run mildly acidic to neutral; many sites land near this band naturally, and a soil test plus targeted sulfur or organic amendment closes any gap.
Will Asystasia actually grow on my specific land in Hawaii?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores asystasia 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 asystasia 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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