Growing Collard Greens in Zone 6b
Zone 6b has mild winters and a long growing season — good conditions for Collard Greens. Last frost: Apr 15. First frost: Oct 22.
Planting Calendar
Season: Apr 15 – Oct 22 (190 days)
When to Plant Collard Greens in Zone 6b
Start Seeds Indoors: Mar 4
Start Collard Greens seeds indoors around Mar 4 (6 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–10 days.
Transplant Outdoors: Mar 25
Transplant Collard Greens seedlings outdoors after Mar 25. Wait until soil temperature reaches 45°F. Space plants at 18/sqft. Harden off plants for a week before moving outside.
Harvest: May 14
First harvest approximately May 14 (~50 days from transplant). Continue harvesting until first frost (Oct 22). Collard Greens can overwinter in mild climates for continued harvest.
Fall Planting: Aug 13
For a fall harvest, plant Collard Greens around Aug 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 6b?
Start Collard Greens seeds indoors around Mar 4. Transplant outdoors after Mar 25. Expect first harvest around May 14.
What is the last frost date for Zone 6b?
The average last spring frost date for Zone 6b is Apr 15. The first fall frost averages Oct 22, giving a 190-day growing season.
Can I grow Collard Greens in Zone 6b?
Yes. Collard Greens needs 60 days to harvest. Zone 6b has a 190-day growing season, which is sufficient.
What is the best month to plant Collard Greens in Zone 6b?
The best time to start Collard Greens in Zone 6b is Mar. Begin seeds indoors around Mar 4, then transplant outdoors after the last frost date of Apr 15.
How long does Collard Greens take to harvest?
Collard Greens takes approximately 60 days from planting to harvest. In Zone 6b, expect your first harvest around May 14.
Plan Your Collard Greens Garden
Track Collard Greens from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Collard Greens Growing Guide