Q.Loose, Fluffy Broccoli
I have been growing broccoli for a couple of months now. The first head I cut off was not as firm as the ones you get in the grocery store, but it was still decent. I thought maybe I didn’t let it go long enough, so the second head I let go a while longer. The second head was pretty loose and fluffy. I even let it go so long that I found one bud opening to a flower. What can I do to make the heads firmer?

Certified GKH Gardening Expert
The heads are loose because the plant is starting to bolt. Keeping it from bolting will keep the heads firmer. This article will help:
https://www.gardeningknowhow.com/edible/vegetables/broccoli/bolting-broccoli-growing-broccoli-in-hot-weather.htm