Answer: Bolting can be caused by stresses of heat, dryness, fluctuations in temperature or transplanting. When a plant is stressed, it rushes to produce seeds--to reproduce--to ensure the continuation of the species. <br><br>I would agree with the article you read from Texas A&M. It could be that by growing the seedlings indoors in the warmth, then moving outside to cooler spring weather, the plants are fooled into thinking they've been through a winter. <br><br>Regarding your lighting practices, I don'tthink I would leave the lights on the seedlings 24 hours per day. I believe 16 hrs. would be sufficient. Seedlings grow best when the temperature of the air is cool, but they receive heat from the bottom (such as that given by heating coils or a propagation mat). Incidentally, some seeds are infamous bolters...parsley and cilantro are among the worst.
Q&A Library Searching Tips