Growing Mustard Greens in Zone 6b
Zone 6b has mild winters and a long growing season — good conditions for Mustard Greens. Last frost: Apr 15. First frost: Oct 22.
Planting Calendar
Season: Apr 15 – Oct 22 (190 days) · Succession: plant every 2 weeks (up to 10x)
When to Plant Mustard Greens in Zone 6b
Start Seeds Indoors: Mar 18
Start Mustard Greens seeds indoors around Mar 18 (4 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 4–8 days.
Transplant Outdoors: Apr 1
Transplant Mustard Greens seedlings outdoors after Apr 1. Wait until soil temperature reaches 40°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.
Harvest: May 16
First harvest approximately May 16 (~45 days from planting). Continue harvesting until first frost (Oct 22).
Fall Planting: Sep 10
For a fall harvest, plant Mustard Greens around Sep 10 (6 weeks before first frost).
Mustard 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 Mustard Greens in Zone 6b?
Start Mustard Greens seeds indoors around Mar 18. Transplant outdoors after Apr 1. Expect first harvest around May 16.
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 Mustard Greens in Zone 6b?
Yes. Mustard Greens needs 45 days to harvest. Zone 6b has a 190-day growing season, which is sufficient. You can plant up to 10 successions.
What is the best month to plant Mustard Greens in Zone 6b?
The best time to start Mustard Greens in Zone 6b is Mar. Begin seeds indoors around Mar 18, then transplant outdoors after the last frost date of Apr 15.
How long does Mustard Greens take to harvest?
Mustard Greens takes approximately 45 days from planting to harvest. In Zone 6b, expect your first harvest around May 16.
Plan Your Mustard Greens Garden
Track Mustard Greens from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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