We specialize in the installation of EP Henry paver patios, driveways and retaining walls, complete landscape design, installation and maintenance, and expert lawn care services. Power core aeration is one of the most important cultural practices available for your lawn. Aeration helps control thatch, improves the soil structure, helps create growth pockets for new roots, and opens the way for water and fertilizer to get into the root zone of your lawn. Annual or semi-annual aeration is advised for all lawns on heavy clay soils, those with a moderate thatch build-up, and any lawn that needs to be "thickened up".