Bermuda, zoysia, centipede, and St. Augustine are warm season lawns. These lawns require core aeration to relieve compaction, and allow air and nutrients to get to the root zone. This is often considered one of the best investments to your lawn. Aeration usually occurs in the spring time, when the turf has transitioned out of dormancy, and has greened up. Aeration is performed on golf courses and athletic fields several times a year. Home owners with warm season lawns should aerate in the spring. Warm season grasses are rhizomatic plants. These plants grow horizontally under or along the ground sending out shoots and roots. Core aeration creates better conditions that allow these new roots and shoots to develop into new plants. Core aeration disturbs the soil and breaks the plant up. This action stimulates the plant and cause it to grow. Your lawn will be thicker and greener as a result. This sets the stage for the rest of the season.