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🟡 Growing Squash in Zone 1b
Zone 1b has harsh winters and a short growing season. Start Squash early indoors to maximize your harvest window. Last frost: May 25. First frost: Aug 28.
Planting Calendar
Season: May 25 – Aug 28 (95 days) · Succession: plant every 3 weeks (up to 1x)
When to Plant Squash in Zone 1b
Start Seeds Indoors: Apr 27
Start Squash seeds indoors around Apr 27 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.
Transplant Outdoors: Jun 8
Transplant Squash seedlings outdoors after Jun 8. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.
Harvest: Jul 23
First harvest approximately Jul 23 (~45 days from transplant). Continue harvesting until first frost (Aug 28).
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 1b?
Start Squash seeds indoors around Apr 27. Transplant outdoors after Jun 8. Expect first harvest around Jul 23.
What is the last frost date for Zone 1b?
The average last spring frost date for Zone 1b is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.
Can I grow Squash in Zone 1b?
Yes. Squash needs 55 days to harvest. Zone 1b has a 95-day growing season, which is sufficient. You can plant up to 1 successions.
What is the best month to plant Squash in Zone 1b?
The best time to start Squash in Zone 1b is Apr. Begin seeds indoors around Apr 27, then transplant outdoors after the last frost date of May 25.
How long does Squash take to harvest?
Squash takes approximately 55 days from planting to harvest. In Zone 1b, expect your first harvest around Jul 23.
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