How Short to Mow Lawn Home›Forums›No dig gardening›Preparing the ground›How Short to Mow Lawn This topic contains 2 replies, has 2 voices, and was last updated by celiacjean 4 days, 17 hours ago. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts 10th August 2018 at 12:18 am #47992 celiacjeanParticipant Wondering how short to mow the lawn before laying down the layer of cardboard and then the compost? 10th August 2018 at 3:37 am #47993 charlesModerator You can mulch on top of long grass, but if you have a mower it’s easier with short leaves. 10th August 2018 at 11:14 pm #47998 celiacjeanParticipant Yes I have a mower so I will cut the grass down really short and then apply the cardboard. Thanks Charles. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic.