Typically lettuce grows in compact small bundles, so I think it’s not difficult to keep a few pots of it in your sunroom or kitchen. I love mixing different varieties of lettuce in the same pot. For instance, I mix spinach with arugula. You can also buy mixed greens and plant them in a big pot. One of the best things about lettuce is that it can regenerate so feel free to snip it for your healthy salad.