Squash Bugs - Companion Plants That Repel Squash Bugs in the Home Garden

Although you will need to experiment to see what works best in your climate, in your soil, generally Radishes and Marigold will repel Squash Bugs, while Squash Vine Borers do not like to be near cloves, onion and garlic. Similarly, planting strong smelling herbs like Valerian, Angelica, Cilantro, Lemongrass and Sage may deter adult moths from laying eggs that hatch into Melon and Pickle Worms.

Suggested Reading:

Control Squash Pests
My Squash Have Pale Green Patches and Are Wilting
Photo of Squash Bugs and Hatching Squash Bug Eggs
Photo of a Pickle Worm
Melon and Pickle Worms - Description, Biology and Control