Rock Leaf is contracted to upkeep and maintain nine rain garden sites in Ramsey & Washington counties. These land areas are designed to capture rain water runoff and help treat polluted stormwater while aiding in the recapture and reabsorption of runoff back into the soil.

These sites are maintained by Rock Leaf through regularly scheduled site visits to treat against invasive species with the use of herbicides and mechanical removal. Rock leaf also keeps the areas free of litter and other forms of pollution.