Growing Scallions in Zone 3B

Scallions (green onions) are one of the most versatile kitchen garden staples — quick, productive, and harvestable at any size.

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

• Succession-sow every 2-3 weeks for continuous supply
• Harvest when tops are 6-8 inches tall and bulb is pencil-thick
• Cut above the soil line to regrow multiple harvests
• Grow in containers on a porch or windowsill for year-round supply
• Interplant with carrots — scallions repel carrot fly

Companion Planting

Good companions: carrots, tomatoes, peppers

Avoid planting near: beans, peas (onions inhibit legume nitrogen fixation)

Harvest Timeline

50-70 days from seed; harvest anytime after tops reach 6 inches

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.