When should I plant Usturoi in Zone 4a?

Direct sow Usturoi outdoors around Apr 3. Harvest around Nov 29.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Usturoi in Zone 4a?

Zone 4a has a 130-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 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Usturoi in this zone. Last frost: May 15. First frost: Sep 22.

Season Too Short

Usturoi needs 240 days to harvest, but Zone 4a has only a 130-day growing season. Consider short-season varieties or season extension techniques (cold frames, row covers).

Zone4a

Last FrostMay 15

First FrostSep 22

Season130 days

Harvest240 days

SunFull Sun

When to Plant Usturoi in Zone 4a

Sow Seeds Outdoors: Apr 3

Direct sow Usturoi seeds outdoors around Apr 3. Soil temperature should be at least 35°F. Space at 9/sqft (4" apart).

Harvest: Nov 29

First harvest approximately Nov 29 (~240 days from planting). Continue harvesting until first frost (Sep 22). Usturoi can overwinter in mild climates for continued harvest.

Fall Planting: Aug 11

For a fall harvest, plant Usturoi around Aug 11 (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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