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Herbicides are chemicals used to kill plants. Use this tag with questions about how to choose and use herbicides on different plants.

1 vote

Using Roundup to Kill Weeds

To completely kill the plant, you need to wait until the Roundup has been transported to the roots via the plant's sap. How long that takes depends on the size of the plant and how fast it is growing …
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5 votes

How heavily are herbicide products restricted in the UK?

Quinchlorac is not approved for use anywhere in the EU, and the UK is unlikely to approve it post-Brexit "just because it can". Arguably it is banned for good reasons, since it has long persistence (i …
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1 vote

Will pre-emergent kill new wildflower seeds

Pre-emergent weedkillers work by disrupting the root growth of newly germinated seeds, so that the seeds germinate and then die. The length of time it stays active in the soil depends on the formulati …
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1 vote

What type of grass am I dealing with and how to get rid of it!

The bad news is there is no selective herbicide that will affect it. You could try a gel formulation of glyphosate or similar weedkillers. …
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1 vote

Options to kill/remove invasive buckthorn

Personally I wouldn't bother about trying to choose a herbicide that won't damage other nearby plants, or grass. …
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1 vote

Turning my existing lawn into something more presentable. Will tilling kill everything so I ...

A systemic herbicide plus moss killer is a lot less work and just as effective, unless you have personal objections to "using chemicals". For the rest, steps 5 and 6 and 7 are in the wrong order. …
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