Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep enough to completely bury at least one full course, including space for 6 to 8 ...

Jenn Nawada talks compost; Retaining wall; Tom builds front hall closet built-ins Jenn Nawada explains what composting is and how you can get started composting at home; As a part of her backyard ...