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🎃 Growing Pumpkin in Zone 10b

Zone 10b has a year-round growing season. Pumpkin can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 31Dec 22

Season: Jan 28 – Dec 22 (328 days)

Zone10b

Last FrostJan 28

First FrostDec 22

Season Length328 days

Days to Harvest100

SunFull Sun

Frost ToleranceNone

Spacing1/sqft (12" apart)

When to Plant Pumpkin in Zone 10b

Start Seeds Indoors: Dec 31

Start Pumpkin seeds indoors around Dec 31 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 5–10 days.

Transplant Outdoors: Feb 11

Transplant Pumpkin seedlings outdoors after Feb 11. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: May 17

First harvest approximately May 17 (~95 days from transplant). Continue harvesting until first frost (Dec 22).

Companion Planting

✅ Marigolds✅ Corn✅ Nasturtiums✅ Oregano

❌ Potatoes

Pumpkin 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

Frequently Asked Questions

When should I plant Pumpkin in Zone 10b?

Start Pumpkin seeds indoors around Dec 31. Transplant outdoors after Feb 11. Expect first harvest around May 17.

What is the last frost date for Zone 10b?

The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.

Can I grow Pumpkin in Zone 10b?

Yes. Pumpkin needs 100 days to harvest. Zone 10b has a 328-day growing season, which is sufficient.

What is the best month to plant Pumpkin in Zone 10b?

The best time to start Pumpkin in Zone 10b is Dec. Begin seeds indoors around Dec 31, then transplant outdoors after the last frost date of Jan 28.

What companion plants grow well with Pumpkin?

Good companion plants for Pumpkin include Marigolds, Corn, Nasturtiums, Oregano. Avoid planting Pumpkin near Potatoes.

How long does Pumpkin take to harvest?

Pumpkin takes approximately 100 days from planting to harvest. In Zone 10b, expect your first harvest around May 17.

Plan Your Pumpkin Garden

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

Start Free Pumpkin Growing Guide