Growing Sweet Peas in Zone 3B

Sweet peas are fragrant climbing flowers that bloom in cool weather — a cottage garden essential.

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

• Soak seeds overnight before planting for faster germination
• Plant very early spring (or fall in mild climates) — they love cool weather
• Provide a trellis or netting — they climb 6-8 feet
• Cut flowers daily to keep plants blooming
• NOT edible — sweet peas are toxic if ingested (unlike garden peas)

Companion Planting

Good companions: other cool-season flowers, beans (share trellises)

Avoid planting near: none — but keep separate from edible peas to avoid confusion

Harvest Timeline

Flowering in 50-65 days from seed; pick daily for longest bloom season

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.