1 Your age: POAG becomes much more common as we get older. It is uncommon below the age of 40 but this type of glaucoma affects one per cent of people aged over 40. About five per cent of people over the age of 65 have primary open angle glaucoma.  Your race: if you are of African origin you are more at risk of POAG.
Harvest. Cabbage will be ready for harvest in 80 to 180 days from seed depending on the variety or in 60 to 105 days from transplants. Cut cabbage when heads are firm and the base of the head is 4 to 10 inches across.
Harvesting Your Cabbage. About 8 to 10 weeks after planting, your cabbage will be ready to pick. (It may take a little longer if planted in the fall in the far southern states.) You can harvest your cabbage anytime after the head has formed. Sometimes the cabbage head looks ready but isnât. Squeeze the head to see.