SproutSmart
SproutSmart Intelligent Garden Sowing

January King

Cabbage

Planting Schedule

Add January King to your garden to build a schedule and get reminders.
Botanical illustration of January King
80d to harvest

Bedecked in tightly layered, savoyed leaves, January King offers a cool-weather sweetness with a crisp, tender bite and a richly green, slightly buttery flavor. Its compact heads form slowly and steadily through winter, holding their quality for patient gardeners who love dependable harvests. Ideal for hearty braises, robust slaws, and warming winter sauces—this is savoy cabbage at its most elegant and garden-worthy.

Crop Dates

Growing note: In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsDec 20th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity80
Sun RequirementsFull SunFull sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)45
Min Soil Temp (°F)40
Min Night Temp (°F)30
Harden Off (days)6

Frequently Asked Questions


What’s the most common pest or disease for Brassica oleracea var. capitata (cabbage) in home gardens, and how can I control it?
Watch for cabbage worms (imported cabbageworm and/or cabbage loopers) and white butterflies laying eggs on the underside of leaves. Hand-pick larvae when you see them, and spray a Bt product labeled for cabbage/Brassica while caterpillars are small; repeat every 5–7 days during active feeding. If you spot black, water-soaked stem lesions or leaf spots, remove affected leaves promptly and avoid overhead watering to reduce spread.
How often should I water January King cabbage during the main growing phase?
During heading and leaf expansion, keep the root zone evenly moist—about 1 inch (2.5 cm) of water per week depending on rainfall and heat. Water deeply so moisture reaches the main roots, then let the top 1–2 inches (2.5–5 cm) of soil dry slightly before watering again. Inconsistent moisture can lead to loose heads or splitting.
Botanical illustration of January King

Bedecked in tightly layered, savoyed leaves, January King offers a cool-weather sweetness with a crisp, tender bite and a richly green, slightly buttery flavor. Its compact heads form slowly and steadily through winter, holding their quality for patient gardeners who love dependable harvests. Ideal for hearty braises, robust slaws, and warming winter sauces—this is savoy cabbage at its most elegant and garden-worthy.