An apparatus to distribute materials in an artificial lawn includes a row of prongs joined to a transverse support, the row of prongs being configured to lift the blades of the artificial lawn, thereby enhancing penetration of the materials between the blades. The apparatus is configured to angularly preadjust the transverse support according to multiple adjustment positions so as to vary pressure of the prongs on the lawn; and a row of brushes configured to improve distribution of materials remaining on a surface of the lawn after the passage of the row of prongs.