I'm ridding my large beds of groundcover, a creeping periwinkle and euonymous vine, which is completely green, not variegated. I'm sorry I ever put it in as it's disastrous, climbing up trees, intertwining into my hydrangeas and worse. It's so prolific, especially after a wet summer that the roots have become deep and essentially escaped into more than I can handle. I did mulch this year with 2 loads of tree clippings - hoping that this would keep the lot at bay. But the leather like undergrowth is as hardy as ever! I won't use roundup. Have heard that vinegar is a possible killer. If I use newspaper, will that completely destroy it over time? I've been chopping it and replanting hostas there. Please give me advice on what will work forever!