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🟡 Growing Squash, Grey Zucchini in Zone 4b
Zone 4b has cold winters and a moderate growing season. Timing is key for Squash, Grey Zucchini in this zone. Last frost: May 1. First frost: Oct 5.
Planting Calendar
Season: May 1 – Oct 5 (157 days) · Succession: plant every 3 weeks (up to 5x)
When to Plant Squash, Grey Zucchini in Zone 4b
Start Seeds Indoors: Apr 3
Start Squash, Grey Zucchini seeds indoors around Apr 3 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.
Transplant Outdoors: May 15
Transplant Squash, Grey Zucchini seedlings outdoors after May 15. 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 19
First harvest approximately Jun 19 (~35 days from transplant). Continue harvesting until first frost (Oct 5).
Fall Planting: Jul 27
For a fall harvest, plant Squash, Grey Zucchini around Jul 27 (10 weeks before first frost).
Squash, Grey Zucchini 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 13bPlan Your Squash, Grey Zucchini Garden
Track Squash, Grey Zucchini from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Squash, Grey Zucchini Growing Guide