Abstract: A unique aerator wheel assembly has a hub and four equally spaced, outwardly projecting, curved tines. The tines are uniquely shaped and configured so that as one tine begins to pierce the ground, the previous tine, which is fully submerged in the ground, is lifted vertically up and out of the ground through the action of the entering tine. This unique configuration provides an aerator wheel assembly that is small and lightweight enough to be pulled behind a common lawn mower.