Saw my bark forming a hill above the weed guard tarp stuff, so I pulled it back and found this plant. Any ideas? I'm from Seattle, WA. One of the pictures shows a woody root or something that was cut off and is starting to grow back, but that might be a Rhodie I think. I do have horse tails (NIGHTMARE), so let me know if this is like the mother ship of the horse tail army and I should cut it all out. I'm winning battles, but the horse tails are winning the war. :( Thanks!