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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.

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To be effective, how long does Glyphosate weed killer need to be applied before it rains?

Glyphosate needs to be applied while the plants is actively growing and transpiring moisture, which requires sunlight. This means you need to apply glyphosate in the morning so that it will take effec …
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