If you haven’t made plans to plant your fall collards, now is the time to start that process. Collards are a southern staple that can be found on many holiday tables. Packed with vitamin A and K, this easy to grow crop is worth the investment.
Collards are a cool-season crop that grows best during cooler temperatures of spring and fall. Collards will also survive the winter in Pamlico County, although freezing weather may burn some leaves. Difficulties of producing a fall crop are early warm temperatures that can slow growth, and a higher volume of insect pests.
If you can locate transplants, go ahead and get them in the ground. Bring soil pH up to 6.0-6.5, and supply enough nitrogen fertilizer to keep plants green and actively growing. For average soils, use 1-2 lbs. of 10-10-10 per 100 square feet before planting. Side-dress with ¼ pound of nitrogen fertilizer like 21-0-0 per 100 square feet, 3 to 5 weeks after the seed comes up or after transplanting, and 2 to 3 weeks after that.
You can also direct seed collards into your garden, leaving approximately 15 inches between plants. You can also grow your own transplants by seeding plants in rows 2-3 inches apart with in-row spacing approximately 2-4 inches. In about 6-weeks you can dig these bare-root plants up and transplant them into the garden with proper spacing. Variety suggestions include Morris Heading, Yellow Cabbage, Vates, Blue Max, and Top Bunch.
Frequent watering will be required during hot sunny days. To improve early growth of small seedlings, shading may be required. The biggest pests include four-legged animals, imported cabbage worms, diamond back moths, and cabbage loopers. A regular insecticide application will probably be required until colder temperatures arrive. Physical barriers like row covers may help prevent insect infestation, but they will also increase growing temperatures. Therefore, they provide the greatest benefit during cooler temperatures and early spring.
Common insecticide recommendations include the active ingredients carbaryl (Sevin), Bt (Dipel), permethrin, bifenthrin, and spinosad. Small insects are easier to control, so keep a look out for activity. Read and follow label directions and pay attention to harvest restrictions (time between application and safe harvest) and maximum applications per year. Rotate products when possible.
Some disease issues may arise, but they usually occur with excessively wet conditions and from saved seed or plant debris left in the garden. If possible, plant on new ground or areas in the garden that did not have a Brassica crop (cabbage, collard, broccoli, etc.) in the spring. Remove plant debris and cultivate deeply. Avoid overhead irrigation when possible. Soil splashing onto leaves and water splashing from infected plants will spread most common collard diseases.