Chrysanthemums Repel roaches, ants, Japanese beetles, ticks, silverfish, lice, fleas, bedbugs, spider mites, harlequin bugs and root-knot nematodes. The ingredient in chrysanthemums that makes them so effective as an insect-repelling companion plant is pyrethrum. Read more: http://www.mnn.com/your-home/organic-farming-gardening/stories/12-plants-that-repel-unwanted-insects#ixzz3G029OPFM
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.