Radishes planting calendar for USDA Zone 9a

Gainesville FL, Houston, New Orleans, southern GA coast. Average last spring frost February 25, first fall frost December 1 — a 279-day frost-free season.

Zone fit: good

Cool-season crops bolt fast under Zone 9a heat. Prioritize the fall planting window and use shade cloth for any spring succession.

Key dates

Direct-seed outdoors

January 21 – February 11

Expected first harvest

February 25 – March 25

Fall planting window

October 13 – November 3

Fall harvest window

November 17 – December 15

Windows are calculated from your zone's average frost dates. Adjust ±1 week for microclimates, elevation, and your own frost records.

Spacing and soil

Plant spacing: 1″
Row spacing: 12″
Seed depth: 0.5″
Soil temperature: 45–70°F
Frost tolerance: hardy
Days to harvest: 28 days

Grower notes for Zone 9a

Fastest crop in the garden. Interplant with slow germinators like carrots to mark rows.

Plant near: cucumbers, carrots, lettuce

Keep away from: hyssop

Other root crops for Zone 9a

Same crop, other zones

Track your own plantings

BAU Farm Intelligence turns these windows into per-field tasks — indoor seed-start reminders, transplant dates, harvest projections — using your farm's actual frost history.

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