Planting Kale

Kale is a frost-tolerant plant, with established plants much hardier than seedlings. Hot temperatures will affect growth, and cause the leaves to have a bitter flavour. Plant seeds 1cm (1/2") deep, 2cm (1") apart with 45cm (18") between rows. Kale prefers well-draining soil rich in organic matter and performs best in full sun, but can also thrive in partial shade.

Growing Kale

Once the seedlings have grown true leaves, thin the seedlings to be at least 30cm (12") apart. Kale requires 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 the garden bed wasn't treated with compost or manure before planting, kale plants may benefit from a nitrogen-rich fertiliser every 2-3 weeks to promote 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 Kale

Kale is ready to be harvested once leaves reach a usable size. For best flavour, allow the kale to be exposed to a mild frost if possible. Gently snap or cut the outer leaves off at their base as they're ready, or harvest the entire plant at once by cutting it at the base of the soil. If harvesting leaves individually, be sure not to harvest more than a third of the total leaves, as this can affect overall growth. Kale is best used immediately, but can be stored loosely in a bag in the refrigerator for up to a week.