Check the listing for details. QUALITY MEDIUM COARSE PERLITE FOR SEED STARTING NURSERY POTTING GARDEN PLANTS. Condition: New. Listed at 7.47 USD. Free eBay listing template designed by dewiso.com Perlite for Gardening/ Seed Starting Hydroponic Soil Amendment Product Perlite is a form of amorphous volcanic glass, although it’s often confused by new gardeners as being some lightweight material like styrofoam If you looked at a piece of horticultural perlite under a microscope, you would see that it’s quite porous. The cavities in perlite help store nutrients and some moisture that the plant might need, but drain excess water away. Non-toxic, sterile, and extremely lightweight Helps prevent soil compaction and promote strong root development Perfect for starting clones Improves drainage and aeration in potting mixes Economy Packaging ShippingAll items purchased will be shipped with USPS First Class Shipping. Other shipping options are available for certain items. Contact Any questions or concerns please contact me through ebay messages. Mikloz Dealz