When to Plant in Tuscaloosa, AL

Tuscaloosa sits in a long growing season. The measured median last spring frost (32°F) is March 23 and the median first fall frost (32°F) is November 11, yielding 233 frost-free days between those dates. That span guides when to start seeds indoors, when to transplant, and when to expect the heat window for warm-season crops. Use March 23 as the anchor for last-frost protections and March 23 as the anchor for final-season harvest protection; season length of 233 days permits multiple warm-season plantings and generous time for heat-loving crops to mature.

The microclimate humid subtropical (long, humid summers) shapes which crops excel and which struggle. Heat- and humidity-tolerant crops such as tomatoes, okra, and sweet potatoes thrive because they set fruit and bulk rapidly in long warm periods. Peppers and eggplant also perform well with adequate water and air circulation. Crops that struggle include cool-season brassicas like broccoli and cabbage, which commonly bolt or suffer caterpillar and fungal pressures in mid-summer heat, and tender leafy salad greens such as lettuce and arugula that quickly bolt or develop bitter flavors when nights and days warm; moisture-related diseases (e.g., fungal leaf spots) also reduce success in dense summer humidity.

What to plant now in Tuscaloosa

Spring: For spring planting, start tomato and pepper seeds indoors 6-8 weeks before March 23 and plan to transplant outdoors after the March 23 last-frost anchor, when nights are reliably warmer and soil has warmed.
Summer: In the summer window after March 23 through early October, direct-sow okra, sweet potatoes slips, and southern peas; succession-plant heat-tolerant squash and cucumbers while providing afternoon shade and consistent irrigation in humid subtropical (long, humid summers).
Fall: For fall crops, start cool-season brassicas and root crops in August to transplant so they establish before the first hard freeze, harvesting before November 11 to avoid frost damage and bolting in cool onset.
Winter: Winter tasks include planting garlic and cover crops after harvest and before March 23; protect overwintered brassicas from occasional freezes and plan spring seed orders during dormancy for the next March 23 planting window.

In Tuscaloosa (233 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Tuscaloosa

Month	What to do
January	Order seeds, repair tools, and map beds. Start onion transplants and cold-hardy brassica seedlings indoors for early spring. Watch overnight temperatures and protect any overwintered crops because the last spring frost is March 23.
February	Continue sowing indoor seeds for warm-season transplants, including tomatoes and peppers. Harden off cold-hardy starts later this month in mild spells. Plan succession rows to maximize the 233 frost-free-day growing season.
March	March contains the last-frost transition; use March 23 as your last-spring-frost anchor. Begin transplanting hardened-off cool-tolerant crops early, then shift to warm-season transplants after March 23 when night temperatures stabilize.
April	Now that March 23 has passed, plant tomatoes, peppers and eggplant outdoors as soil warms. Mulch to conserve moisture in humid subtropical (long, humid summers) conditions and monitor for early fungal issues.
May	May is prime for direct-sowing beans, corn, cucumbers, and squash. Provide adequate spacing and airflow to reduce humidity-related disease. Continue staggered planting to extend harvests through the 233-day frost-free interval.
June	Peak summer demands regular watering and disease scouting. Plant heat-tolerant crops like okra and sweet potatoes. Use shade cloth on sensitive seedlings during heatwaves typical in humid subtropical (long, humid summers) climates.
July	Maintain irrigation, pinch excessive growth on indeterminate tomatoes, and start planning fall sowing. Keep an eye on pests and fungal signs exacerbated by high humidity; adjust watering to mornings to reduce leaf wetness.
August	Start fall brassicas and root crops from seed or transplants to establish before cooler weather. Time planting so transplants are well rooted and ready for harvest before the first fall frost, November 11.
September	Transplant or direct-sow cool-season crops as temperatures moderate. Continue succession planting for leafy greens, but anticipate bolting in the humid subtropical heat if warm spells persist; plan harvests before first frost.
October	Use October to finalize fall plantings and protect young cool-season crops as nights cool. Prepare row covers to shield tender brassicas and greens ahead of the November 11 first-fall-frost anchor.
November	November contains the first-fall-frost transition; expect the median first frost on November 11. Harvest warm-season crops before this date, apply mulch, and install frost protection for any tender vegetables you intend to overwinter.
December	Finish harvesting and plant garlic or overwinter cover crops. Prune fruit trees during dormancy, and use this quieter month to plan seed schedules timed to the March 23 spring-frost anchor for next year.

Frost dates for Tuscaloosa ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
35405	March 23	November 11	8b

FAQ

When is the last frost in Tuscaloosa?

The median last spring frost in Tuscaloosa is March 23. Treat March 23 as your planning anchor: protect tender plants before it and plan to transplant warm-season crops outdoors after this date when nighttime temperatures are reliably warmer.

What vegetables grow best in Tuscaloosa?

Heat- and humidity-tolerant vegetables do best: tomatoes, okra, sweet potatoes, peppers, and eggplant flourish in the long, warm season. Southern peas and many heat-set squash also perform strongly with consistent water and good airflow.

When should I plant tomatoes in Tuscaloosa?

Start tomato seeds indoors about 6–8 weeks before March 23, then transplant outdoors after March 23 when frost danger has passed and soil has warmed. In humid subtropical (long, humid summers), space plants for airflow to reduce disease.

Can I garden year-round in Tuscaloosa?

Yes, but with planning. The 233 frost-free days allow multiple warm-season plantings and a productive fall/winter brassica window. Use season-extending techniques: choose heat-tolerant varieties for summer and row covers for late-season freezes.

How does Plan My Garden help Tuscaloosa gardeners?

Plan My Garden uses your local frost anchors — March 23 and November 11 — plus the 233 frost-free days and humid subtropical (long, humid summers) guidance to create planting schedules, seed-start calendars, variety recommendations, and watering and disease-management tips tailored to Tuscaloosa conditions.