Growli

USDA hardiness zone

Zone 1360 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:

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 frostno frost
Average first fall frostno 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:

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