Inorganic mulches can be made from a range of materials including whole or crushed rocks, recycled glass, or recycled rubber tires.
Like traditional organic mulches, they offer several benefits to gardeners. They help prevent weeds from sprouting, retain moisture in the soil, and keep soil temperatures cooler in summer and warmer in winter.
Because inorganic mulches don't break down the way organic mulches do, they don't need to be replenished regularly. But they also won't provide plants with helpful nutrients the way organic mulches do.
Driveways and mulched paths are some of the best places to use inorganic mulches. Be sure to put down a layer of permeable landscape cloth to prevent the mulch from sinking into our sandy soils.
Also on Gardening in a Minute
- A Cool Use for Recycled Glass--Earth911
- Inorganic Mulch--High Plains Gardening (TX)
- Inorganic Mulches--Cornell (NY) Cooperative Extension
- Mulching for a Healthy Landscape--Virginia Cooperative Extension
- Recycled Glass Mulch--Zanthan Gardens (TX)
- Using River Rock for Groundcover--Texas AgriLife Extension
- Video: Inorganic Mulches--University of Nebraska-Lincoln Extension