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| Product Type | Permanent Soil Amendment |
| Description | Expanded shale is a lightweight, porous mineral specifically recommended for the "gumbo" clay soils of the Houston metro area. Unlike compost or mulch, this kiln-fired shale never breaks down or disappears, providing a permanent change to your soil's structure. It creates essential pore space for oxygen and holds up to 35% of its weight in water, releasing it slowly to plants during dry spells. It is 100% chemically inert and pH neutral. |
| Application | New Beds: Till in a 3-inch layer 6-8 inches deep. Existing Beds: Mix into the top few inches when planting. Containers: Mix 1 part shale to 5 parts potting soil for drainage. |
| Coverage | One 40 lb. bag covers approx. 12 sq. ft. at a 1-inch depth. |
| Key Benefit | Permanently aerates heavy clay; will not rot or settle like organic matter. |
| Product Type | Permanent Soil Amendment |
| Description | Expanded shale is a lightweight, porous mineral specifically recommended for the "gumbo" clay soils of the Houston metro area. Unlike compost or mulch, this kiln-fired shale never breaks down or disappears, providing a permanent change to your soil's structure. It creates essential pore space for oxygen and holds up to 35% of its weight in water, releasing it slowly to plants during dry spells. It is 100% chemically inert and pH neutral. |
| Application | New Beds: Till in a 3-inch layer 6-8 inches deep. Existing Beds: Mix into the top few inches when planting. Containers: Mix 1 part shale to 5 parts potting soil for drainage. |
| Coverage | One 40 lb. bag covers approx. 12 sq. ft. at a 1-inch depth. |
| Key Benefit | Permanently aerates heavy clay; will not rot or settle like organic matter. |
