Guidelines for Building a Retaining Wall
Certain landscaping design guidelines must be considered when building retaining walls. For instances slopes would maintain a maximum proportion of 3:1 meaning, for every wall distance of three feet, the change in wall height should not go over one foot.
Lush plants and flowers tend to soften these stone or concrete structures - so an adequate amount of space must be allotted at the bottom or top of these walls.
As always safety must come first. A child or adult can easily fall over the retaining walls. It is therefore recommended to include a planting bed that is three to four feet wide.
Speak with a professional to get advice on materials to use.