Steep Hillside Erosion Control: Fabric, Mulch, and Plant Choices for Red Clay

On a steep, convex slope of red clay, erosion control is critical. Use biodegradable landscape fabric (jute or excelsior blanket) to hold soil while plants establish. Pine straw is the best mulch for slopes—it interlocks and resists washing better than wood chips. A ½- to 1-inch layer is sufficient; adding cypress mulch underneath isn't necessary. English ivy is aggressive and will smother shrubs; avoid it. Consider a terraced pathway across the slope for maintenance access. Jute fabric placed over mulch helps hold it but is visible; excelsior blankets are thicker, often contain plastic for longevity, and can replace mulch entirely. In wetter climates like North Carolina, excelsior may last longer. Both degrade over time, which is desirable as vegetation takes over.