Blog Post

Control Perennial Weeds This Fall

Many vegetable fields have problems with perennial weeds. The Michigan State University Extension encourages checking and treating for these weeds in the fall, so now is the time to control them before next growing season.

Some of the most common perennial weeds are yellow nutsedge, quackgrass, pokeweed, milkweed and field bindweed. These weeds have perennial roots and annual tops, so they can go undetected before they emergence.

Shorter days and cooler nights in the fall cause “shoot-to-root” movement in weeds as the plants carry carbohydrates into the roots. This movement can also carry systemic herbicides into the roots, providing protection that carries through to the next season. Checking and treating perennial weeds now can help ensure that herbicides are effective in the coming season.

Applying a systemic herbicide is a good way to treat for perennial weeds to prevent problems from occurring next year. With proactive planning and season-long management, perennial weeds can be controlled with lower cost and fewer headaches.

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