English: injurious weeds
Welsh: chwyn niweidiol
Subject: Amgylchedd
English context:  * Once established, do not use PPPs other than within the framework of an IPM plan to spot treat or weed-wipe injurious weeds or invasive non-native species, soft and hard rush, nettles, or bracken. [1]
Welsh context: Ar ôl ei sefydlu, peidiwch â defnyddio cynnyrch amddiffyn planhigion ac eithrio o fewn fframwaith cynllun IPM i sbot drin neu glwt-chwynnu chwyn niweidiol neu rywogaethau estron goresgynnol, brwyn caled, brwyn pabwyr, danadl neu redyn.