Thought to have been grown in Belgium as early as the 13th century. The first written reference date is 1587 when they were popular in the southern Netherlands. This strain of brussel sprouts predates modern hybrid varieties. Compact 24" plants produced 50-100 dark green 1-2" sprouts prized for their sweet, refreshing flavor. A light frost or two will enhance the flavor. Brussels sprouts contain sulforaphane, a chemical believed to have potent anticancer properties.