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Hardscaping often requires preparation of the ground in the area where the feature is being installed. This can include digging, compacting, and leveling the soil, ensuring adequate drainage, and removing any existing plants. The extent of preparation needed will depend on the type and size of the hardscaping feature being installed.

The best way to keep dirt around your foundation is to ensure your drainage is working properly and redirecting water well away from the foundation. Soil erosion is one of the most common causes of basement flooding, so it’s important to make sure you’re retaining the soil you replaced after learning how to regrade around the foundation. In addition, your foundation planting can also help prevent erosion. For example, plant roots to help keep soil in place.

The best size rock for your landscaping depends on the design, as different boulders serve different purposes. If you want to group boulders to create a natural-looking cluster, you’ll need a range of sizes. Otherwise, here are some suggestions:

• Small boulders (smaller than 12 inches across): Best for landscape edging and fire pits 

• Medium boulders (12–24 inches): Best for retaining walls and water features

• Large boulders (more than 24 inches): Best as standalone landscaping features, steps, or walkways.

Of course, you can mix and match sizes to create a unique display.

Basic kits exist, but professional soil engineers provide in-depth analysis and construction recommendations.