Emergency Recovery for Grass Scalped Too Short

Act Fast: Apply Harpin Protein (Messenger)

When a neighbor mows long grass down to the crown in one pass, the grass turns yellow and may not recover. Immediately apply Harpin protein (sold as "Messenger" at garden centers) to stimulate systemic acquired resistance and recovery.

Give It a Break

Avoid foot traffic, mowing, and fertilizing. Keep soil moist but not soggy. Recovery is uncertain, but Messenger gives the best chance.