- Our strain of Calabrese is VERY frost tolerant, if you are in a relatively cool area green sprouting broccoli may continue to produce for 6 months or longer.
brassica oleracea var. capitata (60-90 days) Start Green Sprouting broccoli early in the season and by early summer you will have tons of sweet broccoli. Harvest the central head then lay the plant over on its side for an explosion of side shoots that will just keep coming till the heat of summer.