As spring rears its lovely head, you may find some of your holdover plants doing the same thing. Cabbage, Brussels Sprouts, Kale and other cruciferous vegetables are producing seed heads right now.
Broccoli, Cauliflower, and Romanesco, are bred to produce a huge flower bud- that you eat. But the flower buds on collard greens, cabbage, bok choy, Arugula, and the like are nutritious, tasty, and available.