Kiln-fired, expanded shale that helps aerate and loosen clay and compacted soils. This lightweight aggregate adds more pathways to the soil for stronger rooting and healthier plants. Also beneficial in naturally deterring voles by creating a barrier around tender roots. Excellent aquatic potting media and filtration component for building healthy bacteria in water gardens. It makes a great top-dress for cactus, succulents, and bonsai.
Also available in bulk and SuperSaks.