I've been growing hydroponic broccoli this summer. The initial heads were great. The plants are almost 3 feet tall and have large healthy leaves. Despite some days where the room temp hit high 70s, they didn't bolt.
Once I harvested the initial heads, the plants began sprouting new little ones like crazy. Unfortunately, these are coming out sparse with the florets spread out instead of tightly packed and they are bolting. Is this normal for the secondary growth?
I have them under grow lights 16 hrs/day but also next to a window where they get afternoon sun. I haven't changed the grow mix or the lighting. Obviously the natural sunlight is getting shorter.