When should I plant Usturoi in Zone 4b?

Direct sow Usturoi outdoors around Mar 31. Harvest around Nov 26.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is May 12. The first fall frost averages Sep 25, giving a 136-day growing season.

Can I grow Usturoi in Zone 4b?

Zone 4b has a 136-day growing season, which may be too short for Usturoi (240 days needed). Consider short-season varieties or season extension techniques.

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🧄 Growing Usturoi in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Usturoi in this zone. Last frost: May 12. First frost: Sep 25.

Season Too Short

Usturoi needs 240 days to harvest, but Zone 4b has only a 136-day growing season. Consider short-season varieties or season extension techniques (cold frames, row covers).

Zone4b

Last FrostMay 12

First FrostSep 25

Season136 days

Harvest240 days

SunFull Sun

When to Plant Usturoi in Zone 4b

Sow Seeds Outdoors: Mar 31

Direct sow Usturoi seeds outdoors around Mar 31. Soil temperature should be at least 35°F. Space at 9/sqft (4" apart).

Harvest: Nov 26

First harvest approximately Nov 26 (~240 days from planting). Continue harvesting until first frost (Sep 25). Usturoi can overwinter in mild climates for continued harvest.

Fall Planting: Aug 14

For a fall harvest, plant Usturoi around Aug 14 (6 weeks before first frost).

Companion Planting

✅ Tomatoes✅ Roses✅ Fruit Trees✅ Strawberries✅ Beets✅ Peppers

❌ Beans❌ Peas❌ Sage

Usturoi in Other Zones

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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Track Usturoi from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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