Can I grow brussels sprouts from clippings or parts of the brussels sprout from a mature plant? I have brussels sprouts that are over a year old and they are sending out leaves like a new brussels sprout. Thanks for your help!
It is best to grow your Brussels sprouts from new slips. They do take a long to to mature.
Your plant could continue to grow upward and may produce a few sprouts.
Here are some articles with more information.