Growing Black Radish in Zone 6b
Zone 6b has mild winters and a long growing season — good conditions for Black Radish. Last frost: Apr 15. First frost: Oct 22.
Planting Calendar
Season: Apr 15 – Oct 22 (190 days) · Succession: plant every 2 weeks (up to 9x)
When to Plant Black Radish in Zone 6b
Sow Seeds Outdoors: Mar 11
Direct sow Black Radish seeds outdoors around Mar 11. Soil temperature should be at least 40°F. Space at 4/sqft (6" apart).
Harvest: May 10
First harvest approximately May 10 (~60 days from planting). Continue harvesting until first frost (Oct 22).
Fall Planting: Sep 17
For a fall harvest, plant Black Radish around Sep 17 (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 13bFrequently Asked Questions
When should I plant Black Radish in Zone 6b?
Direct sow Black Radish outdoors around Mar 11. Harvest around May 10.
What is the last frost date for Zone 6b?
The average last spring frost date for Zone 6b is Apr 15. The first fall frost averages Oct 22, giving a 190-day growing season.
Can I grow Black Radish in Zone 6b?
Yes. Black Radish needs 60 days to harvest. Zone 6b has a 190-day growing season, which is sufficient. You can plant up to 9 successions.
What is the best month to plant Black Radish in Zone 6b?
The best time to plant Black Radish in Zone 6b is around Mar 11, when soil temperatures are suitable and frost risk has passed.
How long does Black Radish take to harvest?
Black Radish takes approximately 60 days from planting to harvest. In Zone 6b, expect your first harvest around May 10.
Plan Your Black Radish Garden
Track Black Radish from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Black Radish Growing Guide