Choose a site with full sun and well-drained, fertile soil
Test soil pH and aim for 6.0 to 7.0
Add compost or well-rotted manure before planting
Start seeds indoors or sow directly in cool weather
Transplant seedlings when they have several true leaves
Space plants about 18 to 24 inches apart
Keep rows about 24 to 36 inches apart
Water consistently to keep soil evenly moist
Mulch around plants to conserve moisture and suppress weeds
Fertilize with a balanced or nitrogen-rich fertilizer as needed
Weed regularly to reduce competition
Monitor for pests like cabbage worms, aphids, and flea beetles
Use row covers to protect young plants
Harvest heads when florets are tight and before yellow flowers appear
Cut the main head with a sharp knife
Leave side shoots to develop for additional harvests
Rotate crops each season to reduce disease buildup
Remove diseased plant debris after harvest