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.

Can I grow Black Radish in Zone 4a?

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.

Growing Black Radish in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Black Radish in this zone. Baridi ya mwisho: May 5. Baridi ya kwanza: Oct 1.

Planting Calendar

Outdoor

Harvest

Mar 31Oct 1

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

Eneo4a

Baridi ya mwishoMay 5

Baridi ya kwanzaOct 1

Msimu149 siku

Mavuno60 siku

JuaJua Kamili

When to Plant Black Radish in Zone 4a

Sow Seeds Outdoors: Mar 31

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

Harvest: May 30

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

Fall Planting: Aug 27

For a fall harvest, plant Black Radish around Aug 27 (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 Garden Black Radish

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

Start Free Black Radish Growing Guide