A retaining wall can help serve many purposes since it can be installed in various places as per the need be. It is possible to build an inexpensive retaining wall; however; the cheapest is not always the most cost-effective. Treated pine is one of the most affordable retaining wall materials and is often used for DIY retaining walls. However, this is not very long-lasting. It is possible to extend life by several treatments. However, it is not very durable.Hardwood is a good alternative, although this will work out more expensive than treated pine. The advantage is that it will have more resistance to dirt and water. It is important to establish the main aim of building a retaining wall first. For example, suppose the main reason you require a retaining wall is for residential purposes. I