This is the first year I’ve attempted to start seedling indoors, using heat mats and grow lights. My set up includes two shelves with heat mats, on top of which I’ve placed covered seedling starting trays. These sit under red and blue LED grow lights.
So far, I think my results have been mixed at best. With this set up, germination happens really quickly. Within just a few days, the seeds start sprouting. But, pretty much everything I am growing looks like it is attempting to actually become sprouts or micro greens. I’ve started lettuce, cabbage, broccoli, and two different varieties of onion. The onion seedlings look best, though a bit floppy. As you can see in the picture, the cabbage and broccoli seedlings look pretty “leggy.” As I said, this is my first time trying to start seedlings indoors, so if you have experience doing this, let me know if you think these look right . . . or not. If not, any suggestions?