What plants repel ants or other insects and why?

I'm doing a project on organic pesticides and would like a little more information on why certain plants repel insects and what these plants are.





Thanks!

What plants repel ants or other insects and why?
They repel insects because of pungent odors usually.





Ants pennyroyal, spearmint, southernwood, tansy





Aphids garlic, chives and other alliums, coriander, anise, nasturtium and petunia around fruit trees


Borer garlic, onion, tansy


Cabbage moth mint, hyssop, rosemary, southernwood, thyme, sage, wormwood, celery, catnip, nasturtium


Colorado potato beetle green beans, horseradish, dead nettle, flax, catnip, coriander, tansy, nasturtium


Cucumber beetle tansy, radish


Cutworm tansy


Flea beetle wormwood, mint, catnip, interplant cole crops with tomato


Japanese beetle garlic, larkspur, tansy, rue, white geranium


Leafhopper petunia, geranium


Mexican bean beetle marigold, potato, rosemary, savory, petunia


Mites onion, garlic, chives


Nematodes marigold, salvia, dahlia, calendula, asparagus


Rose chafer geranium, petunia, onion


Slug prostrate rosemary, wormwood


Squash bug tansy, nasturtium, catnip


Tomato hornworm borage, marigold, opal basal


Whitefly nasturtium, marigold