orange marigolds draw pollinators such as bees, as well as other "good" insects (ladybugs and lacewings) that help control the "bad" ones (aphids and caterpillars). It's a better way to boost plant health than using chemical pesticides,
"Plants have best friends just like people do. Marigolds help tomatoes and roses grow better. Nasturtiums keep bugs away from squash and broccoli. Petunias protect beans from beetles and oregano chases them away from cucumbers. Geraniums keep Japanese beetles away from roses and corn. Chives make carrots sweeter, and basil makes tomatoes even tastier"
These beautiful flowers can actually help repel insect and soil pests, with an added bonus of creating a colorful focal point to your vegetable garden! Petunias, nasturtiums, chrysanthemums, geraniums, marigolds, and dahlias can all contribute to your vegetable garden health!
Vegetable Crop Rotation - see article for more helpful info - decrease disease and insect problems, improve soil composition, increase productivity - note that potatoes should be planted in beds that have NOT previously grown tomatoes, peppers, or eggplant.