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🍠 Growing Sweet Potato in Zone 11a

Zone 11a has a year-round growing season. Sweet Potato can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 3Dec 22

Season: Jan 28 – Dec 22 (328 days)

Zone11a

Last FrostJan 28

First FrostDec 22

Season Length328 days

Days to Harvest100

SunFull Sun

Frost ToleranceNone

Spacing1/sqft (12" apart)

When to Plant Sweet Potato in Zone 11a

Start Seeds Indoors: Dec 3

Start Sweet Potato seeds indoors around Dec 3 (8 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 14–21 days.

Transplant Outdoors: Feb 18

Transplant Sweet Potato seedlings outdoors after Feb 18. 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 19

First harvest approximately May 19 (~90 days from transplant). Continue harvesting until first frost (Dec 22).

Companion Planting

✅ Dill ✅ Oregano ✅ Thyme

Sweet Potato 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 Sweet Potato in Zone 11a?

Start Sweet Potato seeds indoors around Dec 3. Transplant outdoors after Feb 18. Expect first harvest around May 19.

What is the last frost date for Zone 11a?

The average last spring frost date for Zone 11a is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.

Can I grow Sweet Potato in Zone 11a?

Yes. Sweet Potato needs 100 days to harvest. Zone 11a has a 328-day growing season, which is sufficient.

What is the best month to plant Sweet Potato in Zone 11a?

The best time to start Sweet Potato in Zone 11a is Dec. Begin seeds indoors around Dec 3, then transplant outdoors after the last frost date of Jan 28.

What companion plants grow well with Sweet Potato?

Good companion plants for Sweet Potato include Dill, Oregano, Thyme.

How long does Sweet Potato take to harvest?

Sweet Potato takes approximately 100 days from planting to harvest. In Zone 11a, expect your first harvest around May 19.

Plan Your Sweet Potato Garden

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

Start Free Sweet Potato Growing Guide