The Cultivar Group name ''Acephala'' ("without a head" in [[Greek language|Greek]]) refers to the fact that this variety of ''B. oleracea'' does not have the usual close-knit core of leaves ("head") like cabbage. The plant is a [[Biennial plant|biennial]] where winter frost occurs, [[Perennial plant|perennial]] in even colder regions. It has an upright stalk, often growing up to 2 feet tall. The collard is essentially a non -heading cabbage. As stated by Burpee in its 1888 catalog, a winter cabbage grown and seeded in the south will revert to a collard. Popular cultivars of collards include Georgia Southern, Morris Heading, Butter Collard (or ''couve-manteiga''), and couve tronchuda. | The Cultivar Group name ''Acephala'' ("without a head" in [[Greek language|Greek]]) refers to the fact that this variety of ''B. oleracea'' does not have the usual close-knit core of leaves ("head") like cabbage. The plant is a [[Biennial plant|biennial]] where winter frost occurs, [[Perennial plant|perennial]] in even colder regions. It has an upright stalk, often growing up to 2 feet tall. The collard is essentially a non -heading cabbage. As stated by Burpee in its 1888 catalog, a winter cabbage grown and seeded in the south will revert to a collard. Popular cultivars of collards include Georgia Southern, Morris Heading, Butter Collard (or ''couve-manteiga''), and couve tronchuda. |