Growing Zucchini in Zone 3B

Zucchini is one of the most productive garden plants — a few plants will feed a family all summer.

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

• One of the easiest warm-season crops to grow
• 2-3 plants are enough for most families
• Harvest at 6-8 inches for tender flesh and fewer seeds
• Hand-pollinate if fruit is rotting before maturing
• Succession plant every 3-4 weeks for continuous harvest

Companion Planting

Good companions: corn, beans, nasturtiums, radishes

Avoid planting near: potatoes, pumpkins (cross-pollination)

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.