People want to know where their food comes from, and there is no shorter answer to that question than a bed in your own backyard. Lettuce is a good place to start, because it is fast, it is forgiving, and you can cut from the same plant for weeks. Lettuce is a cool season crop, so the best time to plant in Nashville would be early fall (Late August - Early October) or spring (March - mid-April) . You can sow straight into the ground through or start seed inside in late August