Could someone point me to source that clearly defines the difference between calabrese and Broccoli?
Welcome to the forum katisue (that sounds like a sneeze!). There's no need to post the same question in more than one folder. It will get picked up. This is a very friendly helpful forum. I hope you find it so and that you're able to help and receive help as required. Tell us a bit about your growing?
calabrese is a large central head and when cut can produce smaller off shoots and is frost tender so usually harvested before the really cold weather sets in - broccoli sprouts smaller stems, usually in the ground for a long time and harvested early spring onwards