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🥬 Growing Lettuce, Black Seeded Simpson in Zone 9b
Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Lettuce, Black Seeded Simpson. Last frost: Mar 10. First frost: Nov 15.
Planting Calendar
Season: Mar 10 – Nov 15 (250 days) · Succession: plant every 2 weeks (up to 14x)
When to Plant Lettuce, Black Seeded Simpson in Zone 9b
Start Seeds Indoors: Jan 27
Start Lettuce, Black Seeded Simpson seeds indoors around Jan 27 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 4–10 days.
Transplant Outdoors: Feb 17
Transplant Lettuce, Black Seeded Simpson seedlings outdoors after Feb 17. Wait until soil temperature reaches 40°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.
Harvest: Mar 24
First harvest approximately Mar 24 (~35 days from transplant). Continue harvesting until first frost (Nov 15).
Fall Planting: Sep 20
For a fall harvest, plant Lettuce, Black Seeded Simpson around Sep 20 (8 weeks before first frost).
Companion Planting
Lettuce, Black Seeded Simpson 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 Lettuce, Black Seeded Simpson in Zone 9b?
Start Lettuce, Black Seeded Simpson seeds indoors around Jan 27. Transplant outdoors after Feb 17. Expect first harvest around Mar 24.
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 Lettuce, Black Seeded Simpson in Zone 9b?
Yes. Lettuce, Black Seeded Simpson needs 45 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 14 successions.
What is the best month to plant Lettuce, Black Seeded Simpson in Zone 9b?
The best time to start Lettuce, Black Seeded Simpson in Zone 9b is Jan. Begin seeds indoors around Jan 27, then transplant outdoors after the last frost date of Mar 10.
What companion plants grow well with Lettuce, Black Seeded Simpson?
Good companion plants for Lettuce, Black Seeded Simpson include Strawberries, Carrots, Beets, Cucumbers, Radishes.
How long does Lettuce, Black Seeded Simpson take to harvest?
Lettuce, Black Seeded Simpson takes approximately 45 days from planting to harvest. In Zone 9b, expect your first harvest around Mar 24.
Plan Your Lettuce, Black Seeded Simpson Garden
Track Lettuce, Black Seeded Simpson from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Lettuce, Black Seeded Simpson Growing Guide