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🟡 Growing Squash in Zone 6b
Zone 6b has mild winters and a long growing season — good conditions for Squash. Last frost: Apr 15. First frost: Oct 22.
Planting Calendar
Season: Apr 15 – Oct 22 (190 days) · Succession: plant every 3 weeks (up to 6x)
When to Plant Squash in Zone 6b
Start Seeds Indoors: Mar 18
Start Squash seeds indoors around Mar 18 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.
Transplant Outdoors: Apr 29
Transplant Squash seedlings outdoors after Apr 29. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.
Harvest: Jun 13
First harvest approximately Jun 13 (~45 days from transplant). Continue harvesting until first frost (Oct 22).
Squash 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 Squash in Zone 6b?
Start Squash seeds indoors around Mar 18. Transplant outdoors after Apr 29. Expect first harvest around Jun 13.
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 Squash in Zone 6b?
Yes. Squash needs 55 days to harvest. Zone 6b has a 190-day growing season, which is sufficient. You can plant up to 6 successions.
What is the best month to plant Squash in Zone 6b?
The best time to start Squash 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 Squash take to harvest?
Squash takes approximately 55 days from planting to harvest. In Zone 6b, expect your first harvest around Jun 13.
Plan Your Squash Garden
Track Squash from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Squash Growing Guide