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 Username or Email Address Password Remember Me No account yet? Register Do you have 10 seconds? Show this DIY to your friends and fans. Report Content To report this post you need to login first. No comments Leave a Reply Cancel replyYou must be logged in to post a comment.