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Seasonal Planting Calendar

Updated May 2026 · 0 plants · 0 actions

Zone 2bNorthern TierZone 3bNorthern TierZone 4bMountain WestZone 5bMidwestZone 6aMidwestZone 7aMid-AtlanticZone 7bUpper SouthZone 8aSoutheastZone 8bPacific NorthwestZone 9aCalifornia MediterraneanZone 9bGulf Coast / SouthwestZone 10aSubtropical

Subtropical gardens run year-round — heat and humidity set the rhythm, not frost. In September, the planting calendar shifts to focus on what tolerates warm nights. Pick a USDA zone above to compare.

Zone 10a in September

🌴 Year-roundYear-round growing
September in Subtropical: Second-spring begins — start fall brassicas and lettuce for the cool window. Frost is not a concern — heat, humidity, and pest pressure set the calendar. Pick a USDA zone above to compare.

About Zone 10a

USDA Zone 10a (Subtropical) is frost-free year-round. Last frost: not applicable. First frost: not applicable. Subtropical — frost is rare. Plant for heat and humidity, not cold. Sources: UF IFAS Extension, Fairchild Gardens & subtropical growers.

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