Abstract: A turf aerator consisting of a cast concrete roller having an axis of rotation, and having an annular surface displaced radially away from the axis of rotation; first and second radial arrays of tubular tines, each tine among the radial arrays having inner and outer ends, and having soil input and soil output ports; and mounting lug and tine receiving channel combinations attaching the radial arrays of tubular tines to opposite ends of the concrete roller so that the outer ends of such tines extend outwardly from the annular surface of the roller, and so that the inner ends of the tines extend inwardly from the annular surface.