I know this is the pesticide forum but I figured I would post here being that I am an applicator and looking for a way to control these. These appear to be some kind of fern, but they propagate amazingly quick, they also stink. The vegetation gives off a pungent odor, very disagreeable, kind of rotting/fecal like. Especially when the vegetation is cut when trimming/removing. I am assuming they are an invasive/weed species because of their speed of propagation and growing environments (foundation cracks, crevices, etc) Immature plants have green stems/stalks and they eventually grow woody. The images show young (5ft) plants and a fully mature "tree". I am located in WNY if it helps. Thanks.