Independent gardening reference, not an extension office. Timing comes from public frost and hardiness-zone data. How we check our facts

USDA hardiness zone band

Zones 9-10

Covers Gulf Coast, coastal California, most of Florida. Guides for Zones 9-10, each linked to its sources. More guides for this zone are added over time.

A hardiness zone is about winter cold, not frost timing on its own — gardens across this whole band still have different average last-frost dates. Use the planting calculator with your own frost date rather than treating every Zones 9-10 guide below as one fixed calendar.

Planting windows

Seasonal tasks