Zone 3b Planting Calendar 2026Complete Seed Starting Schedule
Zone 3b has a short but productive growing season of about 120 days. Cold-hardy crops like kale and root vegetables thrive, and with careful timing, warm-season crops like tomatoes can succeed with early-start varieties.
Last Frost
May 10
First Fall Frost
September 10
Growing Season
123 days
2026 Monthly Planting Schedule
Your month-by-month guide for Zone 3b
1January
🌱 Indoors: Start early crops indoors
☀️ Notes: Plan garden, order seeds
2February
🌱 Indoors: Start main season crops
🌍 Direct: Cold hardy crops direct sow
☀️ Notes: Prepare soil when workable
3March
🌱 Indoors: Continue seed starting
🌍 Direct: Direct sow cool season
☀️ Notes: Prepare beds
4April
🌱 Indoors: Finish warm season indoors
🌍 Direct: Direct sow beans, corn
☀️ Notes: Main transplant month
5May
🌍 Direct: Succession plant
☀️ Notes: Plant out all seedlings
6June
🌱 Indoors: Start fall crops
🌍 Direct: Plant fall vegetables
☀️ Notes: Maintain and water
7July
🌱 Indoors: Fall transplant seedlings
🌍 Direct: Plant fall crops
☀️ Notes: Begin fall planning
8August
🌍 Direct: Plant fall greens
☀️ Notes: Fall garden planting
9September
🌍 Direct: Plant garlic
☀️ Notes: Fall planting continues
10October
🌱 Indoors: Order seeds
☀️ Notes: Clean up, prepare winter
Recommended Varieties for Zone 3b
Top-performing varieties adapted to your zone
tomato
pepper
lettuce
cucumber
squash
Best Crops for Zone 3b
Top performers in your zone's climate
💡 Zone Tip: Start tomatoes and peppers extra early indoors (9–10 weeks) and choose short-season varieties under 70 days.
Zone 3b on the Map
Cities in your zone are highlighted. Click any marker to explore neighboring zone calendars.
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