How to Kill Clover With Ammonium Sulphate

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Clover is a weed that can multiply rapidly in your lawn, but you can often kill it.
Clover is a weed that can multiply rapidly in your lawn, but you can often kill it. (Image: Jupiterimages/liquidlibrary/Getty Images)

Clover is a common weed characterized by dense heads of flowers that can grow rapidly and overtake grass and other plants in your garden. Getting rid of clover can be tricky. It’s a stubborn plant and not too easy to kill. An ammonium sulfate solution, or type of chemical herbicide composed of sulfur and nitrogen, can help you kill off the clover invading your lawn and give your other plants the breathing room they need.

Things You'll Need

  • Ammonium sulphate solution
  • Spray bottle
  • Grass seeds
  • Nitrate fertilizer

Rip out any clover patches by hand. Clover roots tend to free easily from the soil, so you won't need much muscle. The ammonium sulphate solution may not kill all the existing clover. Removing mature weeds yourself helps ensure all the clover will be killed.

Purchase a bottle of the ammonium sulphate solution, which can be found at most home service centers. Prepare the ammonium sulfate solution, if not already prepared, according to the manufacturer’s instructions. Fill a spray bottle with the solution.

Spray the soil containing the patches of clover with the solution. Check the manufacturer’s instructions for proper application. The chemicals in the ammonium sulphate should kill any residual clover roots and buds.

Plant grass seed in the clover areas. The grass seed will cover any bare patches of soil as well as compete against any residual clover seeds.

Apply a nitrate fertilizer to your lawn. The fertilizer will help your garden and grass thrive, making it harder for residual clover to grow.

References

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