When should I plant שום in Zone 9a?

Direct sow שום outdoors around Jan 27. Harvest around Sep 24.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 10. The first fall frost averages Nov 25, giving a 260-day growing season.

Can I grow שום in Zone 9a?

Yes. שום needs 240 days to harvest. Zone 9a has a 260-day growing season, which is sufficient.

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🧄 Growing שום in Zone 9a

Zone 9a has warm winters and an extended growing season — excellent for heat-loving crops like שום. Last frost: Mar 10. First frost: Nov 25.

Planting Calendar

Outdoor

Harvest

Jan 27Nov 25

Season: Mar 10 – Nov 25 (260 days)

Zone9a

Last FrostMar 10

First FrostNov 25

Season260 days

Harvest240 days

SunFull Sun

When to Plant שום in Zone 9a

Sow Seeds Outdoors: Jan 27

Direct sow שום seeds outdoors around Jan 27. Soil temperature should be at least 35°F. Space at 9/sqft (4" apart).

Harvest: Sep 24

First harvest approximately Sep 24 (~240 days from planting). Continue harvesting until first frost (Nov 25). שום can overwinter in mild climates for continued harvest.

Fall Planting: Oct 14

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

Companion Planting

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

❌ Beans❌ Peas❌ Sage

שום 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

Plan Your Garden שום

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

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