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How to Kill Wire Grass

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Wire grass (also known as pineland threeawn) is a grass variety found throughout the southeastern United States of Florida, Mississippi and South Carolina. Because wire grass grows rapidly, it is considered a less desirable landscaping choice than lower maintenance grass types. Fortunately, eliminating wire grass from your lawn or garden is a simple task that can be accomplished in a few short weeks without the need for expensive materials or tools. Even the most inexperienced gardener can kill wire grass without any difficulty.

Hand pull patches of undesirable wire grass you wish to kill.

Dispose of the wire grass in a plastic trash bag or compost bin.

Spread old newspaper over the remaining patches of pulled wire grass.

  • Wire grass (also known as pineland threeawn) is a grass variety found throughout the southeastern United States of Florida, Mississippi and South Carolina.
  • Fortunately, eliminating wire grass from your lawn or garden is a simple task that can be accomplished in a few short weeks without the need for expensive materials or tools.

Weigh down the newspaper with bricks or heavy weights and leave in place for two weeks.

Remove the newspaper and bricks and spot check the wire grass patches to ensure no new wire grass growth exists.

Hand pull any new patches of wire grass growth and dispose of it in a trash bag or your compost bin.

Spot check the area on a weekly basis to ensure that wire grass has been eliminated from your lawn or garden. Repeat the newspaper application if necessary.

Kill Wire Grass In Flowerbeds

Pull small areas of wire grass from each flowerbed by hand, or dig them up using a hand trowel. Spade or till larger clumps of wire grass. Leave turned soil exposed to sunlight, which will dry remaining roots. Wait for a windless day when the air temperature is above 60 degrees Fahrenheit. Put on waterproof gloves, a long-sleeved shirt, long pants, socks and closed-toed shoes. Place cardboard or plastic sheets between the wire grass and desirable plants in the flowerbeds. The sheets will protect the desired plants from the herbicide. Apply a systemic, post-emergent herbicide containing glyphosate to the wire grass in the flowerbeds, coating the wire grass' leaves thoroughly with the herbicide. Follow all directions on the herbicide package's label.

  • Weigh down the newspaper with bricks or heavy weights and leave in place for two weeks.
  • Hand pull any new patches of wire grass growth and dispose of it in a trash bag or your compost bin.

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