
They are exceptionally easy to grow, and they keep away aphids, thripes, Mexican Bean beetles, squash bugs, tomato hornworms and whiteflies.
Marigolds also repel harmful root node nematodes (soil-dwelling microscopic white worms) that attack tomatoes, potatoes, roses and strawberries. The root of the Marigold excretes a chemical that is toxic to nematodes, and kills them as they enter the soil.
Marigolds will bloom well into November. These flowers make charming and beneficial garden companion plants for many different types of herbs and vegetables: including beans, basil, cabbage, cucumber and tomatoes.