Late maturing vegetables are more prone to disease and insect problems. When picking a rotation, remember that vegetables from the same plant family usually have the same problems. Attractants Dill attracts the tomato hornworm, so plant it on the opposite side of the garden from tomatoes. Repellents Sage repels cabbage moths and black flea beetles. Don't count on sage working under heavy pressure from these insects, but it might be worth while to plant a little sage with cabbage, cauliflower and broccoli.
Chives have some repellant properties for aphids.
Marigolds will repel a variety of insects. Fertility Non-organic fertilizer is forbidden under any organic production system, but that does not mean the nutrients the plant needs cannot be supplied from organic sources. Soil testing is suggested to determine what nutrients need to be added to the garden. Following are some average figures for a ton of manure per acre. These are average figures, as manure will vary in nutrient content.