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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comIt has tubers that form 1- 1 1/2’ deep in rock and clay. It’s almost impossible to find and dig them all out. It’s been in place for decades so the patch is large. A landscaper told me that it was popular in the 1970’s but that something killed off most of it. He doesn’t know what did it.
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1 Comment To "How Can I Eliminate An Invasive Plant From A Steep Hillside? I Believe It’s Hyperium Calcynium."
#1 Comment By BushDoctor On 06/29/2022 @ 11:03 am
Since there may be quite a few restrictions on what methods you are permitted to use in your area, I would opt for a treatment that is without chemical means. Solarizing soil can be a very good way to do so.
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