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How to Kill Clover With Ammonium Sulphate

Updated February 21, 2017

Clover is a common weed characterised 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 sulphate solution, or type of chemical herbicide composed of sulphur and nitrogen, can help you kill off the clover invading your lawn and give your other plants the breathing room they need.

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 centres. Prepare the ammonium sulphate 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 fertiliser to your lawn. The fertiliser will help your garden and grass thrive, making it harder for residual clover to grow.

Tip

Water the clover patches with a garden hose before pulling out the mature clover to soften the soil and make removal easier.

Warning

Always wear safety gloves and goggles when handling chemical solutions to avoid chemical burns or other harmful reactions.

Things You'll Need

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