Concrete blocks were out of budget, so we built two large retaining walls using 6x6 landscape timbers. In this video, I show you how we extended their lifespan with drain lines, proper backfill, and ...

We wanted to fix our sloped yard without spending a fortune, so we built a DIY boulder retaining wall. It’s strong, simple to build, and blends beautifully into the landscape.

† Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts 02115 ‡ The Schepens Eye Research Institute, Department of Ophthalmology, Harvard Medical School, 20 ...