Soil Mender Expanded Shale is a great way to loosen and aerate poor clay soils and improve moisture retention in sandy soils. Thousands of tiny pores in expanded shale quickly absorb moisture and slowly release it into your soil.
Excellent in all soil conditions
Great way to loosen and aerate poor clay soils
Improves moisture and nutrient retention in sandy soils
Till 1-3 inches of expanded shale into the top 6 inches of soil. One 40 lb bag will cover 9 sq ft at 1 inch deep.