Cold North

What Can Grow in Zone 4a

Cold northern climate with 105-115 day growing season. Wide variety of vegetables and fruits possible with planning.

Zone 4a has average winter lows of -30°F to -25°F (-34°C to -32°C). You can grow kale, cabbage, beets, and many more plants. The frost-free growing season lasts about 110 days.

-30°FWinter Low
-25°FWinter High
110 daysFrost-Free
May 5Last Frost
August 25First Frost
🥕 Vegetables
kale cabbage beets carrots peas beans broccoli cauliflower
🍎 Fruits
strawberries raspberries blueberries sour cherries apples
🌿 Herbs
chives dill parsley mint thyme oregano sage
🌸 Flowers
marigolds zinnias coneflowers black-eyed Susans daylilies
🌳 Trees & Shrubs
sugar maple paper birch green ash bur oak American linden
💡 Planting Tips

Direct sow peas and carrots 3-4 weeks before last frost. Start tomatoes 6-8 weeks early indoors. Use mulch to retain soil moisture.

🌱
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📍 States in Zone 4a
MinnesotaWisconsinMontanaWyomingMaineVermont
🔀 Neighboring Zones
3b4b

Frequently Asked Questions

USDA Zone 4a has average annual minimum temperatures of -30°F to -25°F (-34°C to -32°C). This temperature range determines which perennial plants can survive winter outdoors.

The average last frost date in Zone 4a is around May 5, and the first fall frost typically arrives around August 25. This gives a frost-free growing season of approximately 110 days.

Zone 4a is well-suited for kale, cabbage, beets, carrots, peas, beans. Direct sow peas and carrots 3-4 weeks before last frost. Start tomatoes 6-8 weeks early indoors. Use mulch to retain soil moisture.

Fruits that thrive in Zone 4a include strawberries, raspberries, blueberries, sour cherries, apples. Always check that specific cultivars are hardy to your zone before planting perennial fruit trees and shrubs.