When should I plant Black Radish in Zone 3a?

Direct sow Black Radish outdoors around Apr 17. Harvest around Jun 16.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.

Can I grow Black Radish in Zone 3a?

Yes. Black Radish needs 60 days to harvest. Zone 3a has a 113-day growing season, which is sufficient. You can plant up to 3 successions.

Growing Black Radish in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Black Radish early indoors to maximize your harvest window. Last frost: May 22. First frost: Sep 12.

Planting Calendar

Outdoor

Harvest

Apr 17Sep 12

Season: May 22 – Sep 12 (113 days) · Succession: plant every 2 weeks (up to 3x)

Zone3a

Last FrostMay 22

First FrostSep 12

Season Length113 days

Days to Harvest60

SunFull Sun

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Black Radish in Zone 3a

Sow Seeds Outdoors: Apr 17

Direct sow Black Radish seeds outdoors around Apr 17. Soil temperature should be at least 40°F. Space at 4/sqft (6" apart).

Harvest: Jun 16

First harvest approximately Jun 16 (~60 days from planting). Continue harvesting until first frost (Sep 12).

Fall Planting: Aug 8

For a fall harvest, plant Black Radish around Aug 8 (5 weeks before first frost).

Black Radish in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Black Radish Garden

Track Black Radish from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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