Weed Control - Knowledgebase Question

Pittsburgh, PA
Question by kelspearls
August 8, 1998
We have recently started to clean up and restore the garden in our new home. In doing so, I have noticed a tree- like weed growing at the base of two old rose bushes. I have had success at removing smaller ones I have found around the property, but these two are rather big. I have been removing green foliage from them but I am losing the battle because of the thorns from the roses. They are starting to affect the health of the roses. What should I do?


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Answer from NGA
August 8, 1998

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You have several options. You can continue chopping off the top and hope that the root runs out of energy before you do. You can try to "smother" it by chopping off the top as close to the ground as possible, covering it with several layers of newspaper or cardboard and top that off with a thick layer of mulch. Finally, you can attack it with an herbicide such as glyphosate being sure to follow the label instructions exactly. Since this is a non-selective herbicide, you will have to be very careful not to get any on the rose. (Some gardeners are able to configure a temporary shield of cardboard, for example, during the application process.)

Good luck with your weeds!

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