Planting Dates for Hawaii
Hawaii's tropical climate allows year-round vegetable production, but gardening differs significantly from mainland practices. Elevation, rainfall, and trade winds create distinct microclimates across the islands.
USDA Zones 10a-13a • 365 frost-free days year-round
Frost Dates in Hawaii
Average last spring frost and first fall frost dates for Hawaii cities. Use these to calculate your planting windows.
| City | Last Spring Frost | First Fall Frost | Frost-Free Days | USDA Zone |
|---|---|---|---|---|
| Honolulu | N/A | N/A | 365 | 12a |
| Hilo | N/A | N/A | 365 | 11b |
Gardening Tips for Hawaii
- ✓Most vegetables can be planted year-round with proper variety selection.
- ✓Choose heat-tolerant varieties of cool-season crops like lettuce and broccoli.
- ✓Windward sides get more rain — leeward sides may need irrigation.
- ✓Tropical pests and diseases require vigilant management and resistant varieties.
What to Plant in Hawaii
Cold-Hardy Crops (plant early)
These crops tolerate frost and can be planted 2-6 weeks before your last frost date.
30-60 days from sowing
55-70 days from sowing
60-80 days from sowing
50-70 days from sowing
55-80 days from transplant
35-50 days from sowing
20-35 days from sowing
July-August the following year
90-120 days from transplant
70-120 days from planting
50-70 days from sowing
50-60 days from sowing
Warm-Season Crops (plant after last frost)
Start these indoors and transplant after all frost danger has passed.
60-85 days from transplant
60-90 days from transplant
50-65 days from sowing
50-65 days from sowing
45-60 days from sowing
60-100 days from sowing
30-60 days from sowing
Get Exact Planting Dates for Hawaii
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Frequently Asked Questions
When is the last frost date in Hawaii?
Last frost dates in Hawaii vary by city: Honolulu (N/A), Hilo (N/A).
What USDA hardiness zones are in Hawaii?
Hawaii spans USDA hardiness zones 10a-13a. Your specific zone determines which perennials survive winter and when to start planting annuals.
What vegetables grow best in Hawaii?
Hardy crops like peas, kale, spinach, and garlic thrive across Hawaii. In warmer zones, tomatoes, peppers, and cucumbers do well with proper timing. Use our free calculator for exact planting dates.
How long is the growing season in Hawaii?
365 frost-free days year-round. Extend your season with cold frames, row covers, and indoor seed starting.
Planting Dates by State
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Free Calculator
Calculate exact planting dates based on your location and frost dates.