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Small patches of weeds can be handled by pulling or digging. All-over lawn weed control is usually not necessary either, as a heavy infestation would be better handled by making the grass healthy. However, for those in-between situations, you may want to consider the use of a chemical or organic herbicide.
• Post-Emergent herbicides work by killing growing plants, usually by interrupting chemical processes such as photosynthesis, protein production, or root growth. They are best applied when the plant is actively growing and in the fall when plants are storing up nutrients in their roots. This allows the herbicide to be quickly sucked down into the roots where it is most effective. Post-emergent herbicides can work on contact (killing only the vegetation they touch) or systemic (absorbing into and killing the entire plant).
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