Radishes planting calendar for USDA Zone 6b

Boone NC, northern VA, central KY, southern IN. Average last spring frost April 24, first fall frost October 8 — a 167-day frost-free season.

Zone fit: excellent

Radishes is well suited to Zone 6b. Standard planting dates work with minor adjustments for microclimates.

Key dates

Direct-seed outdoors

March 20 – April 10

Expected first harvest

April 24 – May 22

Fall planting window

August 20 – September 10

Fall harvest window

September 24 – October 22

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 6b

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 6b

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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