When to Plant Cauliflower in Texas
Published: April 24, 2026
Texas gardeners in Zone 8a enjoy an extended 41-week growing season for cauliflower. Cool-season crops like cauliflower do best in fall, winter, and early spring in Texas — the hot summers bolt these plants before they can be harvested. This guide gives exact dates for Texas based on your local frost calendar.
Cauliflower Planting Dates for Texas
| Start seeds indoors | January 11–18 |
| Last frost (average) | February 15 |
| Transplant outdoors | January 25–February 4 |
| Expect first harvest | March 21 – May 5 |
| Fall crop start | September 22–October 2 |
| Fall harvest | November 16 |
| First fall frost (average) | December 1 |
Dates above assume Zone 8a, the most common zone in Texas. Gardeners in cooler Denton (Zone 7b) plant 1–2 weeks later; warmer McAllen (Zone 9b) can plant 1–2 weeks earlier.
⚠ Start cauliflower indoors 4–6 weeks before last frost. Transplant 2–4 weeks before last frost. Needs consistent moisture and cool temps — bolts in heat above 75°F.
Growing Cauliflower in Texas's Climate
Texas's warm Zone 8a climate makes cauliflower a fall, winter, and early spring crop rather than a summer one. The cool-season window runs roughly October through April in Texas — plant outside this window and the cauliflower will bolt (send up a flower stalk and turn bitter) before it produces a harvestable crop.
Succession planting stretches the cauliflower harvest window. Sow small amounts every two weeks from October through February — you will have staggered harvests rather than a single wave to process all at once. Bolt-resistant varieties extend the usable window an extra three to four weeks into warming weather.
Common cauliflower pests to watch for in Texas include Cabbage Worm and Cabbage Looper. The first line of defense is companion planting: Onion and Celery planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Cauliflower Garden Calendar for Texas
| Month | Task | Notes |
|---|---|---|
| January | Transplant outdoors | Soil temp must be 45°F+; nighttime lows above 50°F |
| February | Harden off seedlings | Set seedlings outdoors 1–2 hours daily, increasing gradually |
| March | First harvest window opens | Cauliflower begins producing 55–100 days after transplant |
| April | — | Off-season |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | — | Off-season |
| July | — | Off-season |
| August | — | Off-season |
| September | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Off-season |
| November | — | Off-season |
| December | First frost approaches | Harvest remaining cauliflower; cover plants on frost nights |
Cauliflower Growing Tips for Texas Gardeners
- •Blanch white varieties by tying outer leaves over the head when it reaches egg-size — prevents yellowing from sun exposure.
- •Keep soil evenly moist — drought stress causes small, bitter 'buttoning' heads instead of full curds.
- •Texas's cool-season cauliflower plants best in October, November, and December for winter and early spring harvest. Spring plantings bolt before producing a harvestable crop.
- •Plant fall crops in mid-July to mid-August for October harvest; fall cauliflower is usually larger and sweeter than spring.
Companion Planting for Cauliflower in Texas
In Texas's warm climate, planting cauliflower with Onion and Celery helps deter pests and improve soil. Avoid planting near Tomato and Strawberry, which inhibit cauliflower growth through root chemistry or shared pest pressure. See the full cauliflower companion planting guide for the complete list.
Cauliflower Planting Dates by City in Texas
Top cities in Texas — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant cauliflower in Texas?
In Texas (Zone 8a), start cauliflower seeds indoors around January 11–18 and transplant outdoors around January 25–February 4 — 3 weeks before the state's average last frost of February 15.
What is the last frost date in Texas?
Texas's average last frost date is February 15 in the state's most common Zone 8a. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow cauliflower year-round in Texas?
cauliflower is a cool-season crop in Texas, with spring and fall windows. Summer heat bolts the plants before they can produce a harvestable crop. Succession planting every 2–3 weeks stretches the harvest window.
What cauliflower varieties grow best in Texas?
For Texas's Zone 8a, consult a local nursery or extension office for cauliflower variety recommendations.
When do I start cauliflower seeds indoors in Texas?
Start cauliflower seeds indoors in Texas around January 11–18, which is 5 weeks before the state's average last frost of February 15. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.