Not that I know of. Some varieties will develop smaller side-shoots after you harvest the main head, but otherwise, just put em in the ground, water as necessary, and watch out for groundhogs.
I used to grow my broccoli from seed in a cold frame and transplant. This year I direct sowed, as soon as I could work the ground. It worked beautifully! I am still harvesting broccoli like crazy. The plants seemed sturdier, when directly planted...Enjoy!