Planting and care
How to grow collard greens
When to grow
Cool season · Annual / biennial grown as annual
How to start
Seed or transplant
Mature size
18–36 in tall and wide, cultivar-dependent
Time to harvest
About 55–85 days; baby leaves sooner
Feeding needs
Heavy feeder
Growth habit
Large Leafy
Harvest and kitchen use
Braised, sautéed, steamed, soups and fresh young leaves
Nutrition and garden value
Vitamins A, C and K plus fiber
Cold-tolerant, long-harvest leafy crop
Common challenges and troubleshooting
Cabbage worms, aphids, flea beetles and heat stress