Though river rock is a flexible material, there are some limitations with its use. Gravel or stone isn’t a great choice for a steep or inclined area as the weight of the stone over time will tend to slide to the bottom, helped along by rain and other factors. Stone can also be difficult to keep looking tidy, so using it in high traffic areas, or places near trees with a lot of leaf litter or fruit debris (like maples, gingkos, black walnuts or crabapples, to name a few) might cause a seasonal mess that will become tiresome to clean up year after year. Using a rake, broom and small leaf blower can help clear the debris. River rock can be a useful material in a desert or xeriscape garden, and can be used as a coverage instead of mulch and provide drainage. However, due to its porosity it can be a friendly habitat for weeds! To prevent this, lay down landscaping fabric or sand beneath your gravel or rock layer. You can keep weed growth minimal by spraying with horticultural vinegar or salt water.
