I had a great year for Romaine lettuce. After learning how nutritious it is, I started a bunch of seeds and they did really well. We had more than we could eat, and after a camping trip I came home to find they’d bolted (see picture). I recommend trying this plant if you have any interest. They are reportedly water intensive but I didn’t find them excessively so. I was also told they will bolt at the first sign of heat but that didn’t happen for me either. They were mature and harvestable for weeks, even with some hot days.