Subarctic

What Can Grow in Zone 2b

Cold continental climate with growing season long enough for a wide range of hardy vegetables and some fruits.

Zone 2b has average winter lows of -45°F to -40°F (-43°C to -40°C). You can grow kale, cabbage, turnips, and many more plants. The frost-free growing season lasts about 80 days.

-45°FWinter Low
-40°FWinter High
80 daysFrost-Free
May 20Last Frost
August 15First Frost
🥕 Vegetables
kale cabbage turnips lettuce spinach peas beets chard
🍎 Fruits
gooseberries currants saskatoon berries strawberries
🌿 Herbs
chives mint dill parsley thyme
🌸 Flowers
pansies snapdragons marigolds zinnias
🌳 Trees & Shrubs
white spruce green ash paper birch Manitoba maple
💡 Planting Tips

Use black plastic mulch to warm soil. Row covers add 2-4°F and protect from late frosts. Focus on 60-70 day varieties for main crops.

🌱
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📍 States in Zone 2b
AlaskaMinnesotaMontana
🔀 Neighboring Zones
2a3a

Frequently Asked Questions

USDA Zone 2b has average annual minimum temperatures of -45°F to -40°F (-43°C to -40°C). This temperature range determines which perennial plants can survive winter outdoors.

The average last frost date in Zone 2b is around May 20, and the first fall frost typically arrives around August 15. This gives a frost-free growing season of approximately 80 days.

Zone 2b is well-suited for kale, cabbage, turnips, lettuce, spinach, peas. Use black plastic mulch to warm soil. Row covers add 2-4°F and protect from late frosts. Focus on 60-70 day varieties for main crops.

Fruits that thrive in Zone 2b include gooseberries, currants, saskatoon berries, strawberries. Always check that specific cultivars are hardy to your zone before planting perennial fruit trees and shrubs.