Asked May 14, 2021, 7:42 AM EDT
Clinton County Michigan
Jim, thanks for the question.
If the spots showed up after the transition this could be sun scald. The hardening off process may have been a little too fast. If before the transition it could could be a burn from being too close to your grow lights. According to some sources, plants too close to the light (especially LEDs) can cause the problem. Check out the following links:
I hope this helps.