Growing Collard Greens in Zone 5b
Zone 5b has cold winters and a moderate growing season. Timing is key for Collard Greens in this zone. Last frost: Apr 28. First frost: Oct 8.
Planting Calendar
Season: Apr 28 – Oct 8 (163 days)
When to Plant Collard Greens in Zone 5b
Start Seeds Indoors: Mar 17
Start Collard Greens seeds indoors around Mar 17 (6 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–10 days.
Transplant Outdoors: Apr 7
Transplant Collard Greens seedlings outdoors after Apr 7. Wait until soil temperature reaches 45°F. Space plants at 18/sqft. Harden off plants for a week before moving outside.
Harvest: May 27
First harvest approximately May 27 (~50 days from transplant). Continue harvesting until first frost (Oct 8). Collard Greens can overwinter in mild climates for continued harvest.
Fall Planting: Jul 30
For a fall harvest, plant Collard Greens around Jul 30 (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 5b?
Start Collard Greens seeds indoors around Mar 17. Transplant outdoors after Apr 7. Expect first harvest around May 27.
What is the last frost date for Zone 5b?
The average last spring frost date for Zone 5b is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.
Can I grow Collard Greens in Zone 5b?
Yes. Collard Greens needs 60 days to harvest. Zone 5b has a 163-day growing season, which is sufficient.
What is the best month to plant Collard Greens in Zone 5b?
The best time to start Collard Greens in Zone 5b is Mar. Begin seeds indoors around Mar 17, then transplant outdoors after the last frost date of Apr 28.
How long does Collard Greens take to harvest?
Collard Greens takes approximately 60 days from planting to harvest. In Zone 5b, expect your first harvest around May 27.
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