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Weeds
in Plants
Ok so all of my flower and shrub beds have become weed heaven no matter what. Even spraying roundup no longer works. Is there anything I can spray that will only kill weeds? Should I lay gravel and cover with thick mulch? Been fighting this for years ready to just quit
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However, as already said, hefty mulching helps but not with those deep rooted or perennial weeds. Those will come through even quite a thick mulch, so if you can give us an idea of what you have, and many a photo or two, that will help. It won't stop weeds seeding in from elsewhere, but it will be easier to hoe them off. A combination of planting and mulching is really the best way.
Weedkillers need sufficient foliage to work well, and the newer ones often need applied several times. Later spring and summer are the best times to use it though, when weeds are growing more strongly.
I live in west central Scotland - not where that photo is...
Nettles, dock, creeping buttercup, rapeseed, and other weeds pale into insignificance against the field grass, except for brambles which run it a close second.