This study was performed to develope the method of wildgrass to process as hydroseeding material which is a most popular revegetation method for Slope areas through the control of soil eroison and stability by seeding grasses. The wildgrass material for the processing were harvested at Suwon, Kyungki-do and Wonju, Kangwon-do in 1994. The investigations were established in laboratory for pot and field experiment with seven treatments by harvesting date and place in 1995. Results indicated that wildgrass harvested field in open space or road side was able to be used as hydroseeding material by proper processing. It was possible to substitute wildgrass seed to conrrnercial turfgrass seed, and plant tissue to mulching fiber by drying and crushing process. Germination of wildgrass seed was relatively slower than control (20g /$m^2$ turfgrass seed) in early stage of 20 days, but surface revegetation rate was higher in 50 days at wildgrass plot than control applied by normal hydroseeding method. Mixture of 5g /$m^2$ of cool season turfgrass seed to wildgrass material increased the rate of early stage of germination and surface revegetation. The application of wildgrass as hydroseeding material showed more naturalistic scenery than rutine hydroseeding with imported cool season turfgrass seed. Key words: Rydroseeding, Turfgrass, Wildgrass, Revegetation.