Growing Collard Greens in Zone 11a
Zone 11a has a year-round growing season. Collard Greens can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.
Planting Calendar
Season: Jan 28 – Dec 22 (328 days)
When to Plant Collard Greens in Zone 11a
Start Seeds Indoors: Dec 17
Start Collard Greens seeds indoors around Dec 17 (6 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–10 days.
Transplant Outdoors: Jan 7
Transplant Collard Greens seedlings outdoors after Jan 7. Wait until soil temperature reaches 45°F. Space plants at 18/sqft. Harden off plants for a week before moving outside.
Harvest: Feb 26
First harvest approximately Feb 26 (~50 days from transplant). Continue harvesting until first frost (Dec 22). Collard Greens can overwinter in mild climates for continued harvest.
Fall Planting: Oct 13
For a fall harvest, plant Collard Greens around Oct 13 (10 weeks before first frost).
Collard Greens 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 Collard Greens in Zone 11a?
Start Collard Greens seeds indoors around Dec 17. Transplant outdoors after Jan 7. Expect first harvest around Feb 26.
What is the last frost date for Zone 11a?
The average last spring frost date for Zone 11a is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.
Can I grow Collard Greens in Zone 11a?
Yes. Collard Greens needs 60 days to harvest. Zone 11a has a 328-day growing season, which is sufficient.
What is the best month to plant Collard Greens in Zone 11a?
The best time to start Collard Greens in Zone 11a is Dec. Begin seeds indoors around Dec 17, then transplant outdoors after the last frost date of Jan 28.
How long does Collard Greens take to harvest?
Collard Greens takes approximately 60 days from planting to harvest. In Zone 11a, expect your first harvest around Feb 26.
Plan Your Collard Greens Garden
Track Collard Greens from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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