Trees produce extensive root systems that spread out and down from the base of the stump. These roots can remain active for long periods of time, causing the stump to produce new shoots with green foliage for several years after you cut down the tree.he exact amount of time it takes a stump to decay varies depending on the species of tree and the conditions in your yard. If you do not want to wait, there are ways you can encourage a stump to break down on your schedule instead of nature's.
1 Material and labor for a wood retaining wall runs approximately $20-$25 a square face foot (and there's usually a minimum charge for small projects), which would be about $1,000-$1,300 for a 50-square-face-foot wall.
1 Material and labor for a wood retaining wall runs approximately $20-$25 a square face foot (and there's usually a minimum charge for small projects), which would be about $1,000-$1,300 for a 50-square-face-foot wall.hopping for a retaining wall: 1  Hiring an engineer to help design a retaining wall can run about $200-$500 or more, depending on the complexity and extent of the project. 2  Hiring an engineer is strongly recommended for walls over 3 feet high.