Kale grows well for those who pay attention.

All plants Card

Kale

Brassica oleracea var. sabellica

Zones 1–9

Growing

Kale is a hardy cool-season crop that can survive a hard freeze. Start plants indoors and transplant them once the weather settles, or sow seeds directly into the ground. Because this plant grows as a single upright stem, it suits container gardening if the soil is well-drained and not waterlogged. For garden beds, aim for a soil pH between 6.0 and 7.5.

Harvest the leaves rather than waiting for a head to form. Since kale does not ripen after you pick it, harvest individual leaves as soon as they are ready to use. For longer-term use, blanch the leaves before freezing them. Keep the leaves unwashed to help them last longer in the fridge or a cool, dark cellar.

Many members of the Brassica oleracea family have been bred for different structures, such as the compact heads of cauliflower or the tight buds of Brussels sprouts. Kale is valued for its large leaves, and it can persist through the winter.

Stats
Sunfull sun
Watermedium
Grow time45–90 days
Height1–3ft
Spacing12–24in
Light
Full sun✓
Part shade✓
Shade✗
Traits
Life cyclebiennial
Categorybrassica
Growth habitupright
Seasoncool
Frost tolerancehardy
Height1–3ft
Spacing12–24in
Days to maturity45–90
Growing
Watermedium
Drainagewell drained
Soil ph min6.0
Soil ph max7.5
Propagation
Seed✓
Cutting✗
Division✗
Graft✗
Tuber bulb crown✗
Transplant✓
Container ok✓
Pollinationself fertile
Pollinator friendly✓
Toxic parts
Leaves✗
Seeds✗
Raw✗
Post harvest
Wash before storing✗
Ripens off plant✗
Curing daysnone
Shelf life1–4wk
Storage methods
Room temp✗
Cool dark✓
Fridge✓
Freeze✓
Can✗
Dry✓
Ferment pickle✓
Blanch before freezing✓
Calendar, zone 7
JanFebMarAprMayJunJulAugSepOctNovDec
Sownoyesyesyesnononononononono
Harvestnonononoyesyesyesyesyesyesyesno