Thai Basil illustration

Growing Thai Basil in Zone 11b

Zone 11b has a year-round growing season. Thai Basil can be planted almost any time with proper planning. Last frost: Jan 15. First frost: Dec 31.

Planting Calendar

Indoor
Outdoor
Harvest
Dec 4Dec 31

Season: Jan 15 – Dec 31 (350 days) · Succession: plant every 3 weeks (up to 14x)

Zone11b
Last FrostJan 15
First FrostDec 31
Season Length350 days
Days to Harvest40
SunFull Sun
Frost ToleranceNone
Spacing4/sqft (6" apart)

When to Plant Thai Basil in Zone 11b

Start Seeds Indoors: Dec 4

Start Thai Basil seeds indoors around Dec 4 (6 weeks before last frost). Optimal germination temperature: 80°F. Germinates in 5–10 days.

Transplant Outdoors: Jan 29

Transplant Thai Basil seedlings outdoors after Jan 29. Wait until soil temperature reaches 60°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Feb 28

First harvest approximately Feb 28 (~30 days from transplant). Continue harvesting until first frost (Dec 31).

Frequently Asked Questions

When should I plant Thai Basil in Zone 11b?

Start Thai Basil seeds indoors around Dec 4. Transplant outdoors after Jan 29. Expect first harvest around Feb 28.

What is the last frost date for Zone 11b?

The average last spring frost date for Zone 11b is Jan 15. The first fall frost averages Dec 31, giving a 350-day growing season.

Can I grow Thai Basil in Zone 11b?

Yes. Thai Basil needs 40 days to harvest. Zone 11b has a 350-day growing season, which is sufficient. You can plant up to 14 successions.

What is the best month to plant Thai Basil in Zone 11b?

The best time to start Thai Basil in Zone 11b is Dec. Begin seeds indoors around Dec 4, then transplant outdoors after the last frost date of Jan 15.

How long does Thai Basil take to harvest?

Thai Basil takes approximately 40 days from planting to harvest. In Zone 11b, expect your first harvest around Feb 28.

Plan Your Thai Basil Garden

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

Start Free Thai Basil Growing Guide