Kill a clover of grass

How to kill clover

Clover is a common weed that takes over untended or malnourished lawns. While clover is harmless to your garden, some people prefer to get rid of it and keep a grass-only lawn. To get rid of clover, apply commercially available products or natural remedies to your lawn. You can also keep clover by maintaining your lawn so it stays healthy and well cared for.

Method one of three:
Use of commercial products

  1. 1 Apply a nitrogen-rich fertilizer. Clover is not good in a nitrogen-rich environment, so a nitrogen fertilizer will kill this grass. Look for a high nitrogen fertilizer at your local hardware store or online. Spray the fertilizer directly onto the shamrock, following the directions on the label.[1]
    • Opt for a slow release organic fertilizer if you only have small shamrocks in your lawn.
    • If you have large spots or shamrocks, opt for a quick release fertilizer to get rid of that weed right away.
    • You can apply the fertilizer once a month or based on the directions on the label. Applying the fertilizer every spring is also a good preventative measure to stop clover from growing.
  2. 2 Spot treat the clover with an herbicide. Look for a herbicide that contains 4-dichlorophenoxyacetic acid and dicamba as they will stop the clover from growing and kill them. Apply the herbicide directly to the clover. Make sure the herbicide doesn't get on other plants.[2]
    • Put the herbicide on the clover once a month or until it dies.
    • You can buy herbicide at your local hardware store or online.
  3. 3 Use ammonia on the clover to burn it off. Ammonia will scorch and kill the clover. Only use ammonia sulfate for use on lawns when the soil is damp after a rainy day. You can also use a hose to dampen the lawn before applying ammonia if you don't want to wait for a rainy day. Put the ammonia directly on the clover so you don't scorch other areas of your lawn.[3]
    • Apply the ammonia once a month or until the clover dies.
    • Buy ammonia for lawn maintenance from your local hardware store or online.

Method two of three:
Apply natural remedies

  1. 1 Spray the clover with a soap and vinegar mixture. Put 1 tablespoon (15 ml) of white vinegar in a spray bottle with 1 tablespoon (15 ml) of dish soap and 34 Cup (180 ml) water. Spray the clover with the mixture as a spot treatment to kill it.[4]
    • Avoid spraying the mixture on surrounding plants or grass as it can damage them.
  2. 2 Use corn glue on the clover. Corn gluten is a natural herbicide that can be used to kill clover. Look for powdered corn gluten to sprinkle on the clover. Use 20 pounds (9.1 kg) corn gluten per 1,000 square feet (93 m)2) of lawn.[5]
    • Pour out the corn gluten after using and let it dry for 2-3 days so the gluten can kill the clover.
    • You can reapply the corn gluten after 4-6 weeks if the clover doesn't die.
  3. 3 Put a plastic wrap over the clover to kill it. Place a garbage bag or plastic tarp over the clover and secure the ends with stones. Leave it on for a couple of weeks so that the clover is deprived of sunlight and oxygen. Make sure the clover is always covered by the tarp so it will die.[6]
    • This option is good if you have large shamrocks in your lawn that can easily be covered by a large plastic sheet or tarp.

Method three of three:
Maintain a clover-free lawn

  1. 1 Fertilize your lawn in the spring to keep the clover away. Use a nitrogen-rich fertilizer on your lawn to maintain it and prevent weeds like clover from growing. Fertilizing your lawn once a year in the spring can also help keep the grass healthy and less susceptible to weeds and pests.[7]
  2. 2 Pull out small shamrocks with a hand fork to keep them from spreading. If you notice tiny shamrocks in your lawn, use a hand fork to dig them up. Make sure to remove the clover's roots from the soil so it doesn't grow back.[8]
  3. 3 Mow your lawn at a high setting so that your grass grows out of the clover. Stand your lawnmower 3 to 3.5 inches (7.6 to 8.9 cm) high so the grass is not cut too short. Your lawn mower should be no lower than 2.5 to 3.8 cm (1 to 1.5 inches) when you mow your lawn. Keeping the grass high can block the sunlight that can feed clover and other weeds.[9]
  4. 4 Water your lawn 1-2 times a week to prevent clover growth. Make sure your lawn stays moist and well hydrated so that weeds like clover don't grow. Give your lawn at least 1 inch (2.5 cm) of water 1-2 times a week early in the morning to keep it healthy. A dry lawn will be starved for nutrients and too unhealthy to fend off weeds like clover.[10]