For more information, read the article Controlling Aphids.

Recently, I was growing some basil in our testing lab. When I came in after the weekend, I noticed that the plants in several of our containers were infested with aphids, but the basil that I had planted in a windowbox with marigolds were aphid-free.

I had always heard that marigolds repel aphids, but now I know it first-hand to be true.

Deborah Miuccio, Gardener’s Supply