That's interesting! Never would have thought too much light would trigger a plant to bolt. The temperature is not a problem. However, I do leave the lights on at lot longer than the 12 hours. Lettuce doesn't really care how long the lights are on. I have good luck with various lettuces, bok choy, and radishes. I'm trying baby carrots now for the first time. Tops are growing well, will have to see if the root forms. I'll start another batch of spinach and set the timer for 12 hours. Thanks for the advice.
