PURPOSE: A wet cultivation method of roll lawn grasses using a seed net and a medium net is provided to enable users to cultivate the lawn grasses in short time with the small amount of water supply.CONSTITUTION: A wet cultivation method of roll lawn grasses comprises the following steps: installing a medium net in a cultivation container without a drain(S101) spreading functional bed soil on the upper side of the medium net(S103) installing a seed net with grass seeds on the upper side of the functional bed soil(S105) and supplying water into the cultivation water with the seed net(S107). The medium net is weaved with wefts and warps, and formed with a material selected from the group consisting of cotton, hemp, imitation silk, polyethylene, and polypropylene.COPYRIGHT KIPO 2012본 발명은 롤 잔디의 습식 재배방법에 관한 것으로, 배수구가 없는 재배용기 내에 배지네트를 설치하는 배지네트설치단계, 전술한 배지네트의 상부면에 기능성 상토를 도포하는 상토도포단계, 전술한 기능성 상토의 상부면에 잔디씨앗이 파종된 씨앗네트를 형성하는 씨앗네트형성단계 및 전술한 씨앗네트가 형성된 재배용기에 물을 공급하는 용수공급단계를 포함하여 이루어진다.