Pick mature cabbage heads that are firm but before they crack. Cut close to the lower surface of the head leaving the stump in the ground.
Keep fresh, unwashed cabbage covered loosely in a plastic bag or perforated bag and refrigerate.
iastate.edu & missouri.edu
Cabbage exists in many different shapes and varieties around the world and grows best in well-drained, fertile soils. Common varieties in the Pacific include head cabbage (round), Chinese cabbage (napa), bak choi (white-stemmed), red cabbage, kale (flowering), and mustard cabbage (Bailey, 1992).