How to Treat Poplar Suckers

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    • 1). Dig up the sucker with the shovel or trowel, severing the sucker from the underground root system. Discard the sucker.

    • 2). Mow off the suckers with the lawnmower as you mow the grass each week.

    • 3). Sever the suckers with the weed trimmer whenever you see them growing out of the soil. Look for suckers at least once a week during the growing season.

    • 4). Paint the 2, 4-D, dimethylamine pesticide onto the cut edges of the suckers after mowing or cutting them off with the weed trimmer. Use this method to treat the poplar suckers only if you removed the parent tree and have residual suckers remaining. If you still have a poplar tree growing that you don't wish to harm, don't use the 2, 4-D, dimethylamine.

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