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. oregano chases them away from cucumbers. Geraniums keep Japanese beetles away from roses and corn. Chives make carrots sweeter. Basil makes tomatoes even tastier.
10 tips for getting rid of Japanese Beetles How to get rid of Japanese beetles naturally. Just plant some plants that repel them: catnip, rue, larkspur, cloves, garlic, tansy, and geranium. These natural ways to rid your outdoor plants of Japanese beetles and prevent Japanese beetle damage and prevent additional damage have been used successfully for years by farmers.