Two ways that a landscaper could help you to deal with erosion in your sloped garden
If you've noticed some erosion of the soil in your sloped garden, here are two ways in which a landscaper could help you.
They Could Construct a Retaining Wall
One common erosion control tactic landscapers employ, is constructing retaining walls at the ends of their clients' sloped gardens. These walls support the soil. In doing this, it can either stop erosion or drastically slow down the speed with which it erodes.
This might be the best job to get your landscaper to do if you have a decent amount of space at the base of the sloping garden and a retaining wall would not, therefore, use up space that you want to use for your patio or deck area. If you want this wall to serve as a long-term erosion-control feature, then you must not only have it built by a landscaper (to ensure it's built in a way that makes it stable and capable of withstanding the constant strain the soil will place on it) but must also use the best wall-construction materials you can buy.
For example, whilst it would be fine to have this wall made of wood if you were only planning to use it as an erosion-prevention structure for a year or two before selling the property, it would be unwise to use this material if you wanted the wall to stay in place for decades, as after a while, the wood would rot and bow under this constant strain. Conversely, if you had the wall built with bricks, it would be more likely to stay stable for many years.
They Could Plant Suitable Vegetation
The other tactic some landscapers use to help put a stop to soil erosion is to plant suitable vegetation in the soil. This is a good option if the erosion process in your garden is still in the early stages, and the topsoil that contains the nutrients the vegetation would require has not, therefore, eroded away.
Planting vegetation will keep the soil in place, as both the root systems of this vegetation and the sections of it that grow above ground (i.e. its flowers, leaves, etc.) will stabilize the soil that would otherwise erode away. The vegetation will serve as a barrier for any topsoil that loosens as a result of being on this sloped surface. It's important to note, however, that in order for this to work in the long run, you must maintain this vegetation, by adding fertilizer when necessary and by keeping it watered.
For more information about erosion control, contact a landscaping company in your area.