When should I plant Black Radish in Zone 9a?

Direct sow Black Radish outdoors around Feb 13. Harvest around Apr 14.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Yes. Black Radish needs 60 days to harvest. Zone 9a has a 237-day growing season, which is sufficient. You can plant up to 12 successions.

Zone 9a has warm winters and an extended growing season — excellent for heat-loving crops like Black Radish. Last frost: Mar 20. First frost: Nov 12.

Outdoor

Harvest

Feb 13Nov 12

Season: Mar 20 – Nov 12 (237 days) · Succession: plant every 2 weeks (up to 12x)

Zone9a

Last FrostMar 20

First FrostNov 12

Season Length237 days

Days to Harvest60

SunFull Sun

Frost ToleranceLight

Spacing4/sqft (6" apart)

Direct sow Black Radish seeds outdoors around Feb 13. Soil temperature should be at least 40°F. Space at 4/sqft (6" apart).

First harvest approximately Apr 14 (~60 days from planting). Continue harvesting until first frost (Nov 12).

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

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

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