Planting Collard Greens

Collard greens are a cool weather crop, and their flavour will improve after experiencing frost. Collard greens can be grown in warmer weather, but will need extra moisture for best results. Plant seeds 1/2cm (1/4") deep, 15cm (6") apart with 75cm (30") between rows. Collard greens prefer well-draining soil rich in organic matter and perform best in full sun, but can also thrive in partial shade.

Growing Collard Greens

Once the seedlings have grown true leaves, thin the seedlings to be at least 45cm (18") apart. The thinned seedlings can be replanted elsewhere, or used in salads. Collard greens require a lot of water, so be sure to keep the soil moist but not wet, watering at the base of the plant to avoid getting the leaves wet and introducing disease. If growing during warmer months, collard greens may benefit from watering twice a day; once in the morning and once in the evening. Fertilise every 2-3 weeks with a nitrogen-rich fertiliser to encourage strong leaf growth.

Row covers can help to protect from pests such as cabbageworms, slugs, snails, and birds. Additionally, check the underside of the leaves regularly for aphids.

Harvesting Collard Greens

Collard greens can be harvested once leaves reach roughly 15cm (6") in size. Gently snap or cut the outer leaves off at the base as they're ready, or harvest the entire plant at once by cutting it at the base of the soil. Collard greens are best used immediately, but can be stored in the refrigerator for up to a week. Collard greens can also be blanched and frozen, where they will last for up to a year.