Removing grass that has overgrown brick lawn edging along walkways or driveways can be time consuming, but is not particularly difficult. Although you may be tempted to use a power lawn edger, the risk of damaging the blade on the brick or damaging the bricks with the blade makes this a job best done by hand. Once you have uncovered the inside edges of the bricks, you should be able to use a lawn edger for general maintenance.
Use a screwdriver to find the edges of the bricks under the grass. Probe downward until you find soil.
Place a bamboo or wood marker every few feet along the edge of the lawn.
Cut through the lawn between the two stakes with an old kitchen knife or a gardening trowel. Work in three foot sections to make taking breaks and finding where you have left off easier.
Use a garden trowel or hand shovel to remove the grass from the top of the brick edging. When you have finished one three foot section, move on to the next.
Attach a high pressure nozzle to your garden hose to wash away any remaining soil and bits of grass.
Regularly trim the grass to prevent new overgrowth. With regular maintenance, your edging should remain free of grass.