I looked in the archives...still needing answers to a question. How DO you get a cabbage to form a head? I didn't realize they wouldn't...but, we are on our 2nd round. First time, last year...red cabbages. Never grew over 6" tall, never formed a head. Had them for over 12 months in the ground.
2nd round, planted them in the back veggie garden, back in november I think. They are about 12" tall so far...no heads.
I am in zone 8B, SC midlands.