How To Kill Snow On The Mountain?

Question

I have a large area I want to clear for future planting. The very aggressive “Snow on the Mountain” has invaded it, so I need to kill that first. I want to plant pansies or other flowers in its place. What can I use to kill the invader which won’t poison the soil for the future? I don’t mind waiting a year. P.S. There is a mature Canadian cherry tree immediately next to the Snow on the Mountain.

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Answer 1

Below is a method that starts with hand pulling, mowing, and covering the area with cardboard. If it becomes too tedious, you may need to use an herbicide. Bishop's weed (snow on the mountain) spreads by brittle underground rhizomes that can return easily if all the roots are not removed. Here is more:

https://extension.umaine.edu/gardening/2022/05/10/removing-bishops-weed/

https://www.gardeningknowhow.com/ornamental/groundcover/snow-on-the-mountain/snow-on-the-mountain-plant.htm