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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.
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.