Abstract: A spray shield unit adapted to be mounted on the head of a sprayer where the head has a spinner thereon rotatable about an axis for spraying liquid generally radially outwardly with respect to said axis. The spray shield unit comprises a hub having an opening therein for receiving the head of the sprayer, and a generally planer circular shield member mounted on the hub generally coaxial with the hub and projecting radially outwardly from the hub for shieldling spray emitted by the spinner from the wind. The shield member is rotatable on the hub generally on the central axis of the hub opening whereby when the spray shield unit is mounted on the head of the sprayer and when the sprayer is held with the spinner axis generally horizontal, the shield member may be rolled on the ground to maintain the head of the sprayer in the hub opening a fixed vertical distance from the ground to provide a uniform distribution of spray onto the ground.