Concur; Deception seems to be an integral component of advertising. However broccoli is a very versatile plant. It can give a big beautiful head only. Very useful for large scale harvesting. It can give you nice head and subsequent side shoots, useful for home gardeners. It can give you a medium head accompanied by multiple shoots, just gaining favor among consumers. Lastly there is the ancient sprouting broccoli, which consist entirely of shoots.
Broccoli (Brassica oleracea 'Purple Sprouting')
