Marigolds, radishes, and nasturtiums are supposed to be pest deterrents. Nasturtiums don't do well here (zone 8) but I love my petite marigolds, tuck them in everywhere. They're actually my favorite flower.One thing I am planning on for 2024 if more marigolds and zinnias.
Last few years I've seen evidence of root knot nematodes trying to invade my garden. Not at all happy about this. French marigold and zinnia roots are supposed to have a substance that can interrupt their life cycle.
I've been planting them around my tomatoes and cucumbers. It seemed to help a lot this year. So far they don't seem to bother my beans and peas.
So lots of zinnias and marigolds will be scattered through the garden. The bees will be happy about that!