How to Use a Gas Weed Whacker As an Edger


Gas weed whackers are essential in trimming grass around walls and buildings and useful in edging flowerbeds and walkways. Nothing gives a yard a crisp, clean appearance like having a nice edge. It adds a finishing touch, making the yard look well groomed. There are gas weed whackers on the market that have the ability to have the nylon string changed out to an edging blade, but these can be expensive. With safety precautions and a little practice, gardeners can use a regular nylon-stringed weed whacker for edging and accomplish the same results as an expensive edging model.

Step 1

Wear safety apparel when mowing or edging your lawn. Be sure to wear safety goggles, closed shoes, a long-sleeve shirt and long pants. This will protect your body and eyes from any rocks or other debris that can fly up as your do the lawn maintenance.

Step 2

Mow the yard and trim around any walls or other structures before creating an edge around flowerbeds or walkways. Leave the edging for last. This will cut the grass to the appropriate length, leaving the stray, tall stands of grass along the edges for trimming.

Step 3

Remove the nylon string holder from the base of the gas weed whacker, if your model uses edging blades. Unscrew the string holder and replace the unit with the edging blades by screwing them in place.

Step 4

Rotate the head of the unit 90 degrees so the blades are perpendicular to the ground. Start the unit and run the blades in a straight motion along the walkway or flowerbed cutting the stray grass and forming a clean-cut edge.

Step 5

Fill the nylon string holder full of string, if using a weed whacker that does not have blades. When cutting against concrete, you will use quite a bit of nylon string because the hard surface will wear it down rapidly as it cuts the edge. Advance the string to where there is approximately 4 inches sticking out of the bottom.

Step 6

Hold the weed whacker in your hands and turn the unit vertical to where the cutting head is perpendicular to the ground.

Step 7

Line the string up to the edge of the grass and begin cutting the edged area. Work slowly as the string can tear into the grass and scalp it, cutting down to the roots. Advance the line as needed so you always have approximately 4 inches of line sticking out of the base of the unit at all times. Continue edging around the areas until you are finished creating your edge.

Step 8

Sweep the area clean or use a gas or electric blower to remove the stands of grass to give the area a clean, finished look.

Things You'll Need

  • Safety goggles
  • Closed shoes
  • Long-sleeve shirt
  • Long pants
  • Nylon line


  • Grass How to Use a Weed Eater
  • All About Lawns: How Do I Trim

Who Can Help

  • All About Lawns: How Do I Trim
Keywords: weed whacker edging, weed eater edging, using weed whackers

About this Author

Joyce Starr is a freelance writer from Florida and owns a landscaping company and garden center. She has published articles about camping in Florida, lawncare, gardening and writes for a local gardening newsletter. She shares her love and knowledge of the outdoors and nature through her writing.