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.
Cabbage seeds should typically be started indoors in the spring, about five to seven weeks before the last frost date predicted for your area. Plants started in April or May can be moved outside in about four to six weeks.ransplant the cabbage seedlings outside as soon as they have three real leaves. This may be as early as a couple of weeks before the last expected frost. If daytime temperatures consistently reach a high of 50 degrees F, your cabbage plants will be fine.