USDA hardiness zone lookup
Wailuku (Maui) (96793) — USDA Zone 12b
Wailuku (Maui), Hawaii · 365-day growing season
Frost dates and growing season for 96793
| USDA hardiness zone | Zone 12b |
|---|---|
| Average last spring frost | no frost |
| Average first fall frost | no frost |
| Growing season length | ~365 days |
| Temperature range (F) | 50 to 60°F |
| Temperature range (C) | 10 to 16°C |
These are 50%-probability averages modeled from this ZIP's USDA hardiness zone and regional climate normals — not a single-station reading. In a typical year the last spring frost will have passed by no frost, but in a colder-than-average year it can run 1-2 weeks later. Plant tender crops (tomatoes, peppers, basil) once both soil and night temperatures are consistently warm — a thermometer beats the calendar.
Growing season in Wailuku (Maui)
Wailuku (Maui), Hawaii sits in USDA Zone 12b, with roughly 365 frost-free days between an average last spring frost around no frost and a first fall frost around no frost. That is a near year-round season — the limiting factor is summer heat, not frost, so schedule cool-season crops for winter and protect tender ones from extreme highs.
What grows in Wailuku (Maui)
Wailuku (Maui) falls in USDA Zone 12b, which means the same hardiness constraints apply as the full Zone 12 guide. Vegetables, herbs, and fruit trees rated to Zone 12b (or hardier) will overwinter here in a typical year.
- Mango, papaya, banana, breadfruit
- Cacao
- Coffee (mid-elevation)
- Coconut
- Pineapple
- Tropical greens
- Hot peppers
- Sweet potatoes
- Cassava
- Tropical herbs
What to plant in Wailuku (Maui) this week
Warm-season tropicals do well in Wailuku (Maui) right now. Watch for midsummer heat stress on tomatoes — short-day varieties or shade cloth help.
- When to plant tomatoes in zone 12
- When to plant peppers in zone 12
- When to plant basil in zone 12
- When to plant cucumbers in zone 12
- When to plant summer squash in zone 12
Full planting calendar for Wailuku (Maui)
Crop-by-crop sowing, transplant, and harvest dates calibrated to zone 12 averages:
- When to plant tomatoes in zone 12
- When to plant peppers in zone 12
- When to plant basil in zone 12
- When to plant bush beans in zone 12
- When to plant cucumbers in zone 12
- When to plant summer squash in zone 12
Local microclimate notes
Zone tables give you the average — but Wailuku (Maui)gardens vary. South-facing walls and paved areas can run a full half-zone warmer than the published rating. Low-lying spots, frost pockets, and shaded north sides can run colder. If you've gardened here a few seasons, your own frost record (the last time you actually got frost damage) is more accurate than any national average.
Source and methodology
Hardiness zone from the USDA Plant Hardiness Zone Map (2023 revision). Frost-date and growing-season figures are modeled from this ZIP's USDA hardiness zone and regional NOAA 1991-2020 climate normals — they are zone-level estimates, not a per-station record, so treat them as planning guidance and confirm against your own local frost history. Crop recommendations are drawn from US Cooperative Extension references and curated by the Growli editorial team. Last reviewed May 2026.
Nearby ZIP codes in Hawaii
- 96813 — Honolulu (Zone 12b)
- 96720 — Hilo (Zone 12a)
- 96766 — Lihue (Zone 12b)
- 96815 — Honolulu (Waikiki) (Zone 12b)
- 96818 — Honolulu (Salt Lake) (Zone 12b)
- 96822 — Honolulu (Manoa) (Zone 12a)
- 96706 — Ewa Beach (Zone 12b)
- 96707 — Kapolei (Zone 12b)
- 96797 — Waipahu (Zone 12b)
- 96744 — Kaneohe (Zone 12a)
- 96734 — Kailua (Zone 12b)
- 96740 — Kailua-Kona (Zone 12a)
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