When should I plant Black Radish in Zone 4a?

Direct sow Black Radish outdoors around Mar 31. Expect first harvest around May 30.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Yes. Black Radish needs 60 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 6 successions.

Zone 4a has cold winters and a moderate growing season. Timing is key for Black Radish in this zone. Siste frost: May 5. Første frost: Oct 1.

Outdoor

Harvest

Mar 31Oct 1

Season: May 5 – Oct 1 (149 dager) · Succession: plant every 2 weeks (up to 6x)

Sone4a

Siste frostMay 5

Første frostOct 1

Sesong149 dager

Høst60 dager

SolFull Sol

Direct sow Black Radish seeds outdoors around Mar 31. Wait until soil temperature reaches 40F. Space plants at 4/m² (15cm avstand).

First harvest approximately May 30 (~60 dager from planting). Continue harvesting until first frost (Oct 1).

For a fall harvest, plant Black Radish around Aug 27 (5 weeks before first frost).

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