Gardening How to De-Thatch a Lawn | This Old House – YouTube diy projects ⋅ September 25, 2019 This Old House landscape contractor Roger Cook explains how to dethatch a lawn. Bookmark(0) Please login to bookmark Do you have 10 seconds? Show this DIY to your friends and fans. Report Content To report this post you need to login first. Like 0 Thanks! You've already liked this No comments diy projects Web: Leave a Reply Cancel replyYou must be logged in to post a comment.