tall broccoli no heads yet Home › Forums › Edible-Garden Questions › Vegetables & Herbs › tall broccoli no heads yet This topic contains 0 replies, has 1 voice, and was last updated by Anonymous 8 years, 1 month ago. Viewing 1 post (of 1 total) Author Posts August 7, 2008 at 5:55 pm #28315 Anonymous I’ve never grown broccoli before — my plants are almost 3 feet tall with no heads in sight. Is this normal? (I’m in Montana, put in transplants about 6/17). When do they start to form heads? Is it cold-dependent? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.