With some trees, the seeds from the tree get embedded into the soil in the lawn’s turf. This stops lawn production and lawn growth and could create weeds. A dethatcher lifts those seeds from the lawn’s turf and lifts other tree debris along with other plant materials and dead grass that can get trapped in the lawn’s turf.
In some cases aerate the lawn first. This causes thatch materials to rise to the lawn’s surface over time, then thatcher materials are easier to remove…doing this along with regular raking up or sweeping up of tree debris.
When To Dethatch
Late Spring to early Summer in warm climates. The soil should be moist to pull fewer roots from the lawn’s turf. Reseed to fill in gaps in the lawn.
Late Spring or early Fall in cold climates. Dethatch with moistening soil. Reseed in the Spring. Allow enough time in the Fall for grass bare spots to regrow.
Do not aerate or dethatch newly planted grass areas. Wait for the next lawn season.