When should I plant Radish in Zone 9a?

Direct sow Radish outdoors around Feb 13. Harvest around Mar 10.

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. Radish needs 25 days to harvest. Zone 9a has a 237-day growing season, which is sufficient. You can plant up to 15 successions.

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Zone 9a has warm winters and an extended growing season — excellent for heat-loving crops like 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 15x)

Zone9a

Last FrostMar 20

First FrostNov 12

Season Length237 days

Days to Harvest25

SunFull Sun

Frost ToleranceLight

Spacing16/sqft (3" apart)

Direct sow Radish seeds outdoors around Feb 13. Soil temperature should be at least 40°F. Space at 16/sqft (3" apart).

First harvest approximately Mar 10 (~25 days from planting). Continue harvesting until first frost (Nov 12).

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

✅ Nasturtiums✅ Spinach ✅ Lettuce✅ Peas

❌ Hyssop

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