Bishops Weed - Knowledgebase Question

puyallup, Wa
Avatar for brettosborne
Question by brettosborne
February 7, 2011
I have bishops weed in all of my flower beds and I hvae been trying to get rid of it for two years. I have tried to pull out all of the roots and also kill it will different weed killers but nothing has worked. Is there anything I can do without ripping out everything? It was nice the first year, but it is a nightmare now!!!!!!

Answer from NGA
February 7, 2011
Bishop's weed creeps by underground rhizomes and in order to eradicate the plant you need to dig and remove every last remnant of roots in the ground. It's difficult and time consuming but if you persist you'll eventually gain control. The key is to hoe or prune away any stem or leaf that emerges from the ground, as soon as it emerges. By consistently cutting off the sprouts the roots will run out of stored energy and die off. But, this needs to be done before the stems or leaves get large enough to begin the process of photosynthesis which will restore the spent energy and revive the roots. You can try cutting the sprouts and immediately paining full strength Round Up on the stubs. This will kill the rhizome responsible for sprouting, but there may be dozens, if not hundreds more rhizomes beneath the soil surface. I've successfully gotten rid of horsetails though this method of whacking back any sprouts as soon as they develop so I know the process works. You just need to resolve yourself to gaining control of the weeds. Good luck with your eradication project!

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