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🥔 Growing Radish in Zone 9b
Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Radish. Last frost: Mar 10. First frost: Nov 15.
Planting Calendar
Season: Mar 10 – Nov 15 (250 days) · Succession: plant every 2 weeks (up to 16x)
When to Plant Radish in Zone 9b
Sow Seeds Outdoors: Feb 3
Direct sow Radish seeds outdoors around Feb 3. Soil temperature should be at least 40°F. Space at 16/sqft (3" apart).
Harvest: Feb 28
First harvest approximately Feb 28 (~25 days from planting). Continue harvesting until first frost (Nov 15).
Fall Planting: Oct 11
For a fall harvest, plant Radish around Oct 11 (5 weeks before first frost).
Companion Planting
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 Radish in Zone 9b?
Direct sow Radish outdoors around Feb 3. Harvest around Feb 28.
What is the last frost date for Zone 9b?
The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.
Can I grow Radish in Zone 9b?
Yes. Radish needs 25 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 16 successions.
What is the best month to plant Radish in Zone 9b?
The best time to plant Radish in Zone 9b is around Feb 3, when soil temperatures are suitable and frost risk has passed.
What companion plants grow well with Radish?
Good companion plants for Radish include Nasturtiums, Spinach, Lettuce, Peas. Avoid planting Radish near Hyssop.
How long does Radish take to harvest?
Radish takes approximately 25 days from planting to harvest. In Zone 9b, expect your first harvest around Feb 28.
Plan Your Radish Garden
Track Radish from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Radish Growing Guide