When to Plant Cauliflower in Alabama
Published: April 24, 2026
Alabama gardeners in Zone 7b have a 38-week growing season for cauliflower (March 1 to November 22). Alabama's spring and fall windows both work well for cauliflower — some gardeners plant both successions for a long harvest. This guide gives exact dates for Alabama based on your local frost calendar.
Cauliflower Planting Dates for Alabama
| Start seeds indoors | January 25–February 1 |
| Last frost (average) | March 1 |
| Transplant outdoors | February 8–18 |
| Expect first harvest | April 4 – May 19 |
| Fall crop start | September 13–23 |
| Fall harvest | November 7 |
| First fall frost (average) | November 22 |
Dates above assume Zone 7b, the most common zone in Alabama. Gardeners in cooler Birmingham (Zone 7b) plant 1–2 weeks later; warmer Montgomery (Zone 8a) 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 Alabama's Climate
Alabama's moderate Zone 7b climate is well-suited to cauliflower with minimal special accommodation. The standard transplant calendar works as written, and harvest windows line up with what seed packets recommend without adjustment.
Succession planting extends your cauliflower harvest significantly in Alabama. A second planting 3 to 4 weeks after the first gives you a backup in case of pest pressure and extends the total harvest window into early fall.
Common cauliflower pests to watch for in Alabama 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 Alabama
| Month | Task | Notes |
|---|---|---|
| January | Start seeds indoors | Use grow lights; warm soil to 70–75°F for best germination |
| February | Transplant outdoors | Soil temp must be 45°F+; nighttime lows above 50°F |
| March | Harden off seedlings | Set seedlings outdoors 1–2 hours daily, increasing gradually |
| April | First harvest window opens | Cauliflower begins producing 55–100 days after transplant |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | — | Dormant season |
| July | — | Dormant season |
| August | — | Dormant season |
| September | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Dormant season |
| November | First frost approaches | Harvest remaining cauliflower; cover plants on frost nights |
| December | — | Dormant season |
Cauliflower Growing Tips for Alabama 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.
- •Alabama's moderate climate supports succession planting — sow new transplants or seeds every 3 weeks during spring to extend the harvest window into fall.
- •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 Alabama
In Alabama's moderate 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 Alabama
Top cities in Alabama — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant cauliflower in Alabama?
In Alabama (Zone 7b), start cauliflower seeds indoors around January 25–February 1 and transplant outdoors around February 8–18 — 3 weeks before the state's average last frost of March 1.
What is the last frost date in Alabama?
Alabama's average last frost date is March 1 in the state's most common Zone 7b. 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 Alabama?
cauliflower is a cool-season crop in Alabama, 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 Alabama?
For Alabama's Zone 7b, consult a local nursery or extension office for cauliflower variety recommendations.
When do I start cauliflower seeds indoors in Alabama?
Start cauliflower seeds indoors in Alabama around January 25–February 1, which is 5 weeks before the state's average last frost of March 1. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.