What Do Potato Beetles Do

Potato beetles are pests of plants in the nightshade family. … Both the adults and the larvae eat the leaves of these plants. Getting rid of potato beetles is a priority for the vegetable gardener due to the range of plants the pest can infest.

Are Colorado potato beetles bad?

They start out very small, and get bigger as they grow into adult beetles. As they grow, they eat the leaves of their host plant. … Left unchecked, the Colorado Potato Beetle can be deadly to your potato crop.

What will kill Colorado potato beetle?

For the larval through adult stages, Spinosad, the active ingredient in Monterey Garden Insect Spray works to control the Colorado Potato Beetle. Beauveria bassiana, the active ingredient in Botanigard, kills both larvae and adults – use either as a soil drench or as a foliar application to the plants.