From a news release from Growstone®, which makes horticultural products that are made from 100% recycled glass and 100% American made:

Imagine taking 250 tons of discarded glass bottles out of New Mexican landfills each month and turning them into high-performance horticulture products. No small feat. Yet, that’s exactly what Growstone ® does in their manufacturing plant located right in the middle of the Albuquerque landfill.

For Growstone, it all begins with crushed beer bottles, wine bottles, soda bottles, you name it. Then they mill the bottles into a flour-like powder and bake them in a kiln. The result is a highly porous, super-lightweight material that comes out in large sheets looking like brownies. After cooling, they are broken into different size “stones” for various horticultural applications, including growing mediums, soil aerators and fungus gnat control top dressings. ” A six-pack of beer bottles makes roughly enough to Growstones to grow one tomato plant,” says CEO, Mike Langone. “It’s a horticultural and environmental win-win.”

Growstones’ highly porous, lightweight ‘stones’ result in superior plant performance in containers and raised bed gardening. They provide a perfect balance of moisture

control, drainage and soil aeration while adhering to sustainable practices, unlike other product in this category.

The company’s newest product, Gnat Nix! ™ is a non-toxic fungus gnat control used as a top dressing. It is the only scientifically proven, chemical-free product that significantly reduces fungus gnats on plants, indoors or out. No matter where gnats are in their lifecycle, Gnat Nix! works – either by preventing the adult emergence from hatching larvae or deterring females from laying eggs.

Gnat Nix! is now available in a 2-liter bag – perfect for 3-4 houseplants, or a 9-liter bag for a multitude of plants. Gardener, J.M. at Northside Garden Supply, said, “Gnat Nix! destroyed our gnat population!” Grower, C. Fuller, said, “It works killer! Best thing on the market.”

Growstone has also added the ultimate growing media to their product list. In keeping with the company’s mission to provide plant growers with high performance, sustainable products, GS-3 Coco Mix ™ is a blend of tripled washed and buffered coco coir, Growstones, sustainable Redwood Fiber and enriched with Mycorrhizae. GC-3 Coco Mix provides plants with a super aerated root zone that promotes unimpeded, strong growth.

For growers that prefer to create their own mix, Growstone’ s Mix This ™ stones can be blended with potting soil, coco coir, peat or compost. Mix This! provides excellent aeration for a plant’s roots while helping to reduce problems caused by overwatering, as well as protecting against root rot. “Plants need air as much as they need water for optimum growth. Mix This! does both. It holds 30% of its volume in water and 50% of its volume in air after irrigation. That means that when blended with potting soil, Mix This! brings your roots all the aeration and fast drainage they need, while providing available water. It’s the best of both worlds,” says Dr. Paula Costa, Director of Research and Development.