100 days. [Introduced by German immigrants ~1840.] In the early 1900's,Virginia gardeners used to sow seeds of this variety and use it as a source of cut greens while the heads were forming. Large, flat heads weigh 10 to 15 lbs and measure 7 x 14 in. Low-growing heads have a short core and excellent wrapper leaves. May grow poorly in hot weather but revives quickly with onset of cool, wet weather. Very good keeper.