When should I plant Korean Radish in Zone 1a?

Direct sow Korean Radish outdoors around Apr 20. Harvest around Jun 14.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Korean Radish in Zone 1a?

Yes. Korean Radish needs 55 days to harvest. Zone 1a has a 95-day growing season, which is sufficient. You can plant up to 2 successions.

Growing Korean Radish in Zone 1a

Zone 1a has harsh winters and a short growing season. Start Korean Radish early indoors to maximize your harvest window. Last frost: May 25. First frost: Aug 28.

Planting Calendar

Outdoor

Harvest

Apr 20Aug 28

Season: May 25 – Aug 28 (95 days) · Succession: plant every 2 weeks (up to 2x)

Zone1a

Last FrostMay 25

First FrostAug 28

Season Length95 days

Days to Harvest55

SunFull Sun

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Korean Radish in Zone 1a

Sow Seeds Outdoors: Apr 20

Direct sow Korean Radish seeds outdoors around Apr 20. Soil temperature should be at least 40°F. Space at 4/sqft (6" apart).

Harvest: Jun 14

First harvest approximately Jun 14 (~55 days from planting). Continue harvesting until first frost (Aug 28).

Fall Planting: Jul 24

For a fall harvest, plant Korean Radish around Jul 24 (5 weeks before first frost).

Korean 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

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

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