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Extension > Yard and Garden News > Late Fall Vegetable Gardening - Pest Management

Friday, September 26, 2014

Late Fall Vegetable Gardening - Pest Management

Cindy Tong, UMN Extension Specialist


UMN Dept. of Entomology

Photo 1: Adult Colorado Potato Beetle

Take care of those pests, or they might just come back next year! Two of the recurring pests common to most gardens are weeds, weeds, weeds and Colorado potato beetles. Weeds are plants that have evolved successful strategies for competing against other plants, like developing spreading rhizomes (think Creeping Charlie) or lots and lots and lots and lots of small seeds (amaranth). If your garden has weeds that are blooming or forming seeds, it's worthwhile to take them out even now. Otherwise, those lots and lots and lots and lots of seeds will drop to the ground and stay in the soil, making up a big part of the seedbank, from which future generations of weeds will grow.

Colorado potato beetle adults may still be laying eggs, even if your potato plants are going to be dug up soon. Even if there soon won't be anything for those beetles or their young to eat, it's still worthwhile killing the adults because they can overwinter in nearby brush, and then come back out next spring!

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