When do you plant radish in zone 12a?

In USDA hardiness zone 12a (last frost ~Jan 26, 2026, first frost ~Jan 24, 2026): Direct sow outdoors Mar 5, 2026–Mar 5, 2026. Exact dates vary by location within the zone.

When to plant radish in zone 12a

A planting schedule for radish in USDA hardiness zone 12a, where the typical last spring frost is around Jan 26, 2026 and the first fall frost around Jan 24, 2026. Dates are computed from NOAA frost normals for a representative location (Wahiawa, HI) — your exact dates depend on your address.

Radish planting schedule for zone 12a

Direct sow outdoorsMar 5, 2026 – Mar 5, 2026

Playing it safe with tender crops? Spring frost holds off until about Apr 9, 2026 in roughly 9 years out of 10.

Want exact radishdates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

Free on one garden — no credit card. See the full radish growing guide or the whole zone 12a calendar.

Radish in other zones

Zone 4b
Zone 5b
Zone 6b
Zone 7b
Zone 8b
Zone 9b

More crops for zone 12a

Garlic
Leek
Onion
Celery
Arugula
Collard
Kale
Parsley
Beet
Broccoli
Brussels Sprouts
Cabbage

Frost dates are NOAA 1991–2020 climate normals for a representative location (Wahiawa, HI) in zone 12a; your exact dates depend on your address. Schedules are guidance, not guarantees.