I always plant specific flowers in my gardens that keep away pests - an easy and cost efficient solution to keep your other plants healthy.
Ants………..Mint
Aphids……….Garlic,
Bean Leaf Beetle…………Onion
Codling Moth…………Oleander
Colorado Potato Bug…………..Coriander
Cucumber Beetle……………Tansy
Flea Beetle…………Garlic
Imported Cabbage Worm…………..Mint
Japanese Beetle……………Garlic
Leaf Hopper………….Petunia
Mexican Bean Beetle……………..Marigolds
Mice………………Onion
Root Knot Nematodes……………Marigolds
Slugs…………Rosemary
Spider Mites…………….Garlic
Squash Bug…………..Marigolds
Stink Bug…………….Radish
Thrips……………Marigolds
Tomato Hornworm…………..Marigolds
Whitefly…………….Marigolds