← Back to Plant Explorer
vegetableBiennialEdible

Collard Greens

Brassica oleracea var. viridis

Also known as: collards

Large-leaved heat-tolerant brassica green. Extremely cold hardy—flavor sweetens after frost. Southern garden staple.

Collard Greens

Growing Requirements

SunFull Sun
WaterMedium
Soil Type
Soil Drainage
Soil pH
Plant Spacing18–24″
Row Spacing24–36″
Planting Depth0.25–0.5″
Height24–36″
Spread18–24″
✗ Not Container Friendly✓ Raised Bed Friendly

Planting Schedule

Start Indoors

6–8 weeks before last frost

Transplant Outdoors

-2–9 weeks after last frost

Fall Sow

8–12 weeks before first frost

Germination

5–10 days

Days to Harvest

60–80 days

Zone Suitability

USDA Hardiness Zones

1
2
3
4
5
6
7
8
9
10
11
12
13

Zones 2–11

Can overwinter in appropriate zones

Survives temps to 10°F. More heat tolerant than most brassicas. Harvest lower leaves first.

Companion Plants

No companion data available for this plant yet.

← Back to Plant Explorer