Kailua, Hawaii, sits in USDA hardiness zones 10a-11b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Among the crops suited to this profile: taro, mango, macadamia, and coffee. The site-level story — soil, sun, drainage — decides the rest.
Even in Kailua, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Kailua lot. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
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
Quick Facts
USDA Zones
10a-11b
Last Frost (state avg.)
None
First Frost (state avg.)
None
Town Area
5K acres
Hardiness Zone Range
Growing Season
Zone maps are averages across Kailua. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil varies lot by lot — soil types explained.
What Grows in Kailua
Plants matched to Kailua's USDA zones 10a-11b — each links to its full growing profile.
Growing Challenges in Hawaii
What an experienced grower plans around here — each one has a move.
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.
For cultivar selection, pest pressure, and planting-time guidance specific to Hawaii, the UH Mānoa CTAHR Extension is the authoritative local source.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Sources Checked
within ~10 miles of Kailua
Severity Distribution
within ~10 miles of Kailua
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Kailua, Underground Storage Tanks runs higher than the national average — 452 sites nearby. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Kailua
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
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.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Kailua Average
- ●USDA Zones 10a-11b
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Kailua
Pull a site-specific report for your exact address in Kailua, Hawaii — soil, sun, drainage, frost risk, and scored plant recommendations.
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.
25+ data sources analyzed in seconds
Key Growing Facts for Kailua, Hawaii
- USDA Hardiness Zones: 10a-11b (USDA PHZM 2023)
- Last Spring Frost (state avg.): None (NOAA 30-Year Climate Normals)
- First Fall Frost (state avg.): None (NOAA 30-Year Climate Normals)
- Land Area: 5K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Kailua, Hawaii?
Kailua sits in USDA hardiness zones 10a-11b, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
When does frost risk typically end in Kailua?
Kailua follows Hawaii's statewide frost window: last spring frost around None and first fall frost around None, per NOAA 30-year climate normals (1991–2020). Frost dates shift with elevation and local microclimate, so watch your own site's cold pockets.
What vegetables grow in Kailua?
Kailua's zones 10a-11b support a wide range — strong performers include Taro, Mango, Macadamia, Coffee, and Plumeria. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Kailua, really?
Officially, Kailua sits in USDA zones 10a-11b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Kailua?
The federal record around Kailua runs heavier than most — 730 documented sites — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Kailua?
As the season closes around Hawaii's first fall frost near None (NOAA 30-year climate normals (1991–2020)), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.
Everything on this page is a Kailua average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.