Texas planting calendar

When to plant basil in Texas — sow, transplant & harvest dates

Texas is mostly USDA zone 8b (range 6a-10a). Dates below are derived from basil's frost tolerance and Texas's frost window — not generic national averages.

Basil planting timetable for Texas

Stage	When in Texas	Anchor
Start seeds indoors	early February (February 1)	6 weeks before the last frost (mid-March (most of state))
Transplant outside	late March (March 22)	7 days after the last frost (mid-March (most of state))
First harvest (estimate)	late May (May 21)	~60 days from transplant

Dates are state-wide averages for the dominant zone. Local microclimates — elevation, urban heat, coastal moderation — can shift the window by 1-2 weeks. Use the frost-date calculator for a date tuned to your town.

Why Texas's climate shifts the basil dates

Texas's last spring frost averages mid-March (most of state) and first fall frost mid-November (most of state), which sets the whole planting clock. Texas is huge and spans cold Panhandle plains to a nearly frost-free Gulf and Rio Grande Valley. Most of the state has a long, hot season in zones 8-9. Wait for warm soil — basil stall in cold ground even after the air warms, so don't rush them out.

Basil is one of the most cold-sensitive common herbs — it sulks below 10 °C and dies in light frost. Wait a full week after the last spring frost before moving transplants outside, or direct-sow two weeks after frost when soil hits 18 °C.

Frost-risk note

Don't plant before mid-March (most of state) — even a light frost will kill seedlings overnight. In the northern Panhandle near Dalhart (zone 6a) the safe date runs a week or two later.

Regional variation within Texas

the northern Panhandle near Dalhart (zone 6a) runs roughly 1-2 weeks behind the state average; the lower Rio Grande Valley near Brownsville (zone 10a) can plant 1-2 weeks earlier.

Houston — USDA zone 9b
San Antonio — USDA zone 9a
Dallas — USDA zone 8b
Austin — USDA zone 9a
El Paso — USDA zone 8b

What else to plant in Texas around then

Pair the post-frost slot with other warm-season crops — peppers, beans, squash, and cucumbers.

Quick-grow guide

Sun: Full sun — 6+ hours direct.
Soil temperature for germination: 20-25 °C (68-77 °F).
Spacing: 8-12 inches (20-30 cm) between plants.
Days to harvest: ~60 days from planting out.

Frequently asked questions

When is the best time to plant basil in Texas?

In Texas (mostly USDA zone 8b), sow basil indoors around early February, transplant outdoors late March (after the last frost, mid-March), and harvest from late May. Basil are frost-tender — a single light frost kills seedlings, so they only go outside once frost danger has fully passed and the soil is warm.

What USDA zone is Texas?

Most of Texas sits in USDA hardiness zone 8b, with the state spanning roughly 6a-10a from the northern Panhandle near Dalhart (zone 6a) to the lower Rio Grande Valley near Brownsville (zone 10a). The last spring frost averages mid-March (most of state) and the first fall frost mid-November (most of state).

Can you grow basil in Texas?

Yes. Texas's dominant zone 8b supports basil — the key is timing. Basil are frost-tender — a single light frost kills seedlings, so they only go outside once frost danger has fully passed and the soil is warm.

Does the planting date change across Texas?

the northern Panhandle near Dalhart (zone 6a) runs roughly 1-2 weeks behind the state average; the lower Rio Grande Valley near Brownsville (zone 10a) can plant 1-2 weeks earlier.

What else can I plant in Texas around the same time?

Pair the post-frost slot with other warm-season crops — peppers, beans, squash, and cucumbers.

Source and methodology

State zone spans from the USDA Plant Hardiness Zone Map (2023); frost-date averages from NOAA Climate Data Online. Hot-state two-season timing cross-checked against the UF/IFAS Florida Gardening Calendar and the University of Arizona Cooperative Extension planting calendar. Curated by the Growli editorial team.