When should I plant Spinach in Zone 10a?

Direct sow Spinach outdoors around Jan 9. Harvest around Feb 18.

What is the last frost date for Zone 10a?

The average last spring frost date for Zone 10a is Feb 20. The first fall frost averages Dec 1, giving a 284-day growing season.

Can I grow Spinach in Zone 10a?

Yes. Spinach needs 40 days to harvest. Zone 10a has a 284-day growing season, which is sufficient. You can plant up to 17 successions.

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🍃 Growing Spinach in Zone 10a

Zone 10a has a year-round growing season. Spinach can be planted almost any time with proper planning. Last frost: Feb 20. First frost: Dec 1.

Planting Calendar

Outdoor

Harvest

Jan 9Dec 1

Season: Feb 20 – Dec 1 (284 days) · Succession: plant every 2 weeks (up to 17x)

Zone10a

Last FrostFeb 20

First FrostDec 1

Season Length284 days

Days to Harvest40

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing9/sqft (4" apart)

When to Plant Spinach in Zone 10a

Sow Seeds Outdoors: Jan 9

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

Harvest: Feb 18

First harvest approximately Feb 18 (~40 days from planting). Continue harvesting until first frost (Dec 1). Spinach can overwinter in mild climates for continued harvest.

Fall Planting: Oct 20

For a fall harvest, plant Spinach around Oct 20 (6 weeks before first frost).

Companion Planting

✅ Cauliflower ✅ Cabbage✅ Beans✅ Strawberries

Spinach in Other Zones

1a 1b 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 Spinach Garden

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

Start Free Spinach Growing Guide