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.

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