Cabbage grows best in full sun and well drained, mineral soils or muck. Maintain a pH between 5.5 and 6.5 unless club root is a problem then keep a pH of 6.8. Sandy soil produces earlier crops but heavier soils give a later but larger yield. Cabbage plants started indoors take 4 to 6 weeks to get a suitable transplant. Plant spring crops outdoors in early April and fall crops in late June. Space rows 24 to 30 inches apart with plants 18 to 24 inches apart. Seedlings can be set a little deeper than they were growing in the flat. Use one cup of 12- 12-12 fertilizer per 50 feet of row one month after transplanting then monthly until heads form. Radishes or other fast maturing crops can be grown between the cabbage plants. These crops will have been harvested before the cabbage begins to crowd them. Root pruning is done by shoving a spade into the soil on one side of the plant and will stop mature heads from splitting.
Harvest as soon as the heads form.