Awesome Industries High Quality Pumice Stone is a USA sourced 100 % Organic NonDecomposing Soil conditioner with over 70 trace minerals. An essential aggregate for grow media or soil mixtures that foster root development, and the cultivation of healthy plants. Pumice Rock Average Sizing SMALL 1/8” from 5/64- 9/64 (2-3.4 mm), Regular 1/4" From 3/8-1/4 and they come in a resealable bag, supporting sustainable recycled material practices. Our Pumice has a high porous structure and up to 40 % lighter weight overall compared to other pumices, and has the same bulk pumice volume with less weight so it's easier to handle. Finer grades of Pumice for smaller potted plant pots and containers, seedlings or cuttings with Regular / Coarse pumice and Large sizing for medium and larger containers up to Landscaping. Pumice provides excellent aeration and drainage all while it prevents soil compaction and stability for plant roots. With a stable pH and Unlike perlite it will not float, our pumice stone for plants is a key component from the home gardener to the professional nursery in their soil mixes for all kinds of Bonsai, Cacti, Succulent, Orchids and Many other container-grown plants. This Inert pH neutral organic Horticultural pumice for plants can be used on its own or as an amendment component of your preferred custom soil blend. Dried, Cleaned and Graded for minimal dust and Ready to use without any phosphates, Urea, Asbestos or other contaminants. Awesome Industries High Quality Pumice Stone is a USA sourced 100 % Organic NonDecomposing Soil conditioner with over 70 trace minerals. An essential aggregate for grow media or soil mixtures that foster root development, and the cultivation of healthy plants. Pumice Rock Average Sizing SMALL 1/8” from 5/64- 9/64 (2-3.4 mm), Regular 1/4" From 3/8-1/4 and they come in a resealable bag, supporting sustainable recycled material practices. Our Pumice has a high porous structure and up to 40 % lighter weight overall compared to other pumices, and has the same bulk pumice volume with less weight so it's easier to handle. Finer grades of Pumice for smaller potted plant pots and containers, seedlings or cuttings with Regular / Coarse pumice and Large sizing for medium and larger containers up to Landscaping. Pumice provides excellent aeration and drainage all while it prevents soil compaction and stability for plant roots. With a stable pH and Unlike perlite it will not float, our pumice stone for plants is a key component from the home gardener to the professional nursery in their soil mixes for all kinds of Bonsai, Cacti, Succulent, Orchids and Many other container-grown plants. This Inert pH neutral organic Horticultural pumice for plants can be used on its own or as an amendment component of your preferred custom soil blend. Dried, Cleaned and Graded for minimal dust and Ready to use without any phosphates, Urea, Asbestos or other contaminants.