Growstone® GS-2 Mix This! Soil Aerator is the ideal aeration component of soil mixes. Its highly porous aggregates act as air pockets, significantly enhancing aeration and drainage of any sphagnum-peat-, coco-coir- or composted-soil-based mix. As a result, it creates the ideal environment for plants’ root systems and leads to healthy, thriving plants. Ideal for growing a wide variety of plants including herbs, flowering and woody ornamentals, vegetables, tropicals, trees and shrubs, Growstones Soil Aerator is a sustainably engineered alternative to perlite and other soil amendments used to improve texture and structure of soil or soilless mixes.