USDA hardiness zone
Zone 13 — 60 to 70°F
Hawaii (coastal lowlands), Puerto Rico (south coast) · 365-day growing season
What grows in Zone 13
Zone 13 suits the following plants based on temperature tolerance and growing-season length:
- Coconut
- Cacao
- Breadfruit
- Mango
- Papaya
- Banana
- Pineapple
- Cassava
- Sweet potato
- Hot peppers
- Tropical greens
- Tropical flowering ornamentals
Climate notes for Zone 13
Most northern garden references are useless here. Local agricultural extensions (e.g., University of Hawaii Cooperative Extension) are the right resource.
Frost dates and timing
| Average last spring frost | no frost |
|---|---|
| Average first fall frost | no frost |
| Growing season length | ~365 days |
| Temperature range (F) | 60 to 70°F |
| Temperature range (C) | 16 to 21°C |
These are zone-wide averages. Local microclimates (south-facing slopes, urban heat, lakeside warmth) can shift dates by 1-2 weeks within the same zone.
Source and methodology
Temperature ranges from the USDA Plant Hardiness Zone Map (2023). Frost-date averages from NOAA Climate Data Online national averages within each zone. Plant recommendations curated by the Growli editorial team from US extension service references.
What to plant in Zone 13
Crop-by-crop sowing, transplant, and harvest dates for zone 13:
- When to plant tomatoes in zone 13
- When to plant peppers in zone 13
- When to plant basil in zone 13
- When to plant bush beans in zone 13
- When to plant cucumbers in zone 13
- When to plant summer squash in zone 13