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Salt . Bring 500ml of water and 250ml of salt to the boil, then pour the solution directly onto the plants. Alternatively, pour salt onto the soil, then spray with water.
Vinegar . It is lethal for some types of plants: spray vinegar directly on the weed, it will disappear after a few days.
Boiling water . This is a quick and easy fix: pour boiling water directly on the plant to kill it.
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