Zone 3a
Extreme cold: -40°F to -35°F
This zone has a growing season of 90-120 days, with the last spring frost around June 1 and the first fall frost around August 31.
Growing Season
90-120 days
Last Spring Frost
June 1
First Fall Frost
August 31
States in Zone 3a
AlaskaMinnesotaMontanaNorth Dakota
Monthly Planting Guide
Spring
June
- •Start cold-hardy crops indoors
- •Prepare garden beds
July
- •Plant cold-hardy seedlings
- •Direct sow quick crops
August
- •Harvest early crops
- •Plant fall vegetables
Summer
June
- •Monitor for frost
- •Use row covers
- •Water regularly
July
- •Continue harvesting
- •Protect from heat
- •Succession plant
August
- •Harvest remaining crops
- •Clean up garden
- •Plan for next year
Fall
September
- •Final harvest
- •Clean up garden
- •Add compost
October
- •Plant garlic
- •Mulch beds
- •Order seeds
November
- •Review season
- •Plan improvements
- •Maintain tools
Get Personalized Recommendations
Enter your specific location to get planting recommendations tailored to your microclimate
Find Your Location