As amateur gardeners we brought a Japanese Horsetail plant about 2 years ago for our Japanese inspired slate garden. Unfortunately we did not realise how it spreads and new shoots have been poking up through our weed membrane for a little while now. Up until now we had been pulling them out, but have recently read that new shoots will grow from old shoot scars. The biggest problem is that our Sambucas plant next to the Horsetail has now died! Is this coincidental or do you think the Horsetail has consumed it? Im so worried because the next closest plant is my established Japanese Acer!!! How do I go about removing this aggresive Horsetail from my garden without it doing any more damage. Thanks.