Heavier loamy soils will produce the greatest yields. The lighter, well drained, sandy soils are best for early spring crops. Soils should be well drained, rich in organic matter and have a pH of 6.0 to 6.5. Fertilizer - Leafy vegetables require quick, continuous growth for best quality. They need ample nitrogen for good green color and tender growth.
Soil testing is recommended.
These varieties have consistently done well in North Carolina conditions. Cropping Systems - There are four general ways to produce collards. Grow plants and set transplants in early spring, and harvest the whole plant 50 to 60 days later. Grow plants and transplant in early spring, and market cropped leaves in late spring, and carry plants over to fall when the entire plant is harvested. Seed direct about August 15, or transplant from September 1 to 15, and harvest in late October to December.