Growing Squash (Summer) in Zone 3B

Summer squash including yellow squash and pattypan grows fast and produces prolifically in warm weather.

Zone 3B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.

Top Growing Tips

• Direct sow after all frost danger has passed
• Space plants 3-4 feet apart for air circulation
• Harvest when small (6-8 inches) for best flavor
• Watch for squash vine borers — wrap stems with foil
• Pick every 2 days to keep plants producing

Companion Planting

Good companions: corn, beans (Three Sisters), nasturtiums, marigolds

Avoid planting near: potatoes

Harvest Timeline

45-55 days from seed

About Zone 3B

USDA Hardiness Zone 3B has an average last spring frost around May 15 and first fall frost around Sep 15. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.