How to Grow Kale in Raised Beds

How to Grow Kale

Kale is a cool-season workhorse. It holds in the bed longer than lettuce and often sweetens after a frost. Give it more room than a salad mix, and cover it if cabbage worms are bad.

Key growing facts for Kale
Spacing	12–18 in
Soil	Compost-rich, even moisture
Sunlight	6+ hours; light shade in summer heat
Planting depth	¼–½ inch for seed; transplant at pot depth
Water	Steady; dry beds get bitter, tough leaves
Days to harvest	Baby leaves ~30 days; full plants 50–70

Soil requirements

Kale likes fertility. A compost top-dress in a working bed is usually enough.

Watering

Shallow drying in raised beds makes kale tough. Mulch and water the root zone.

Sunlight

Full sun in spring and fall. Afternoon shade helps it linger in hot summers.

Planting

Spring and late-summer sowings beat midsummer transplants in most of the US.
Harvest outer leaves; leave the growing point.

Spacing

12–18 inches, or 1 per square foot. Crowding invites aphids and mildew.

Common problems

Cabbage worms
Green caterpillars chew holes. Row cover from transplant is the cleanest defense.
Aphids
Check new growth. A strong water spray handles light pressure.

Helpful tools

Row cover
Harvest knife

Product links will be added when independently researched. See the garden tools hub for buying criteria.

Frequently asked questions

Can kale overwinter in a raised bed?

In much of the South and the milder West, yes. In cold winters it may survive with a cover, or it may not. Raised beds freeze harder than in-ground soil.