Apparatus includes a lawn debris collection assembly having a plenum assembly configured to be positioned in close proximate relationship with a lawn surface having lawn debris lodged between lawn blades of a lawn. The plenum assembly is movable along the lawn surface. The plenum assembly is also configured to house a positive air-pressure stream in such a way that the positive air-pressure stream is directed toward the lawn debris, and the positive air-pressure stream, in use, dislodges the lawn debris from between the lawn blades. The plenum assembly is also configured to house a negative air-pressure airstream in such a way that the negative air-pressure airstream, in use, flows from the plenum assembly to a debris-collection bag. The negative air-pressure airstream, in use, urges the lawn debris to move from the plenum assembly to the debris-collection bag.
