- Carolina Stonecrops Inc.
- Providing quality plants for extensive greenroofs.
- Emory Knoll Farms, Inc.
- Supplier of plants and plant expertise for extensive green roof systems.
- ERTH Products, LLC
- Manufactures and engineers specialty soils utilizing compost and lightweight aggregates.
- GreenTech Systems
- Offering a light weight and efficient green roof system on a wide variety of roofs and structures.
- JDR Enterprises, Inc.
- Manufacturer of geonets, geocomposites, sub-surface drainage composites, sheet-drains, strip-drains for residential and commercial applications.
- LiveRoof, LLC
- Providing a prevegetated modular green roof system developed by growers and specifically designed to grow plants on a rooftop environment.
- Midwest Trading Horticultural Supplies, Inc.
- Specializes in premium hardwood and pine mulches, landscape, nursery and rooftop growing media, cu structural soil, composts (mushroom, blended and organic), nursery supplies, containers, aquatic supplies, tools.
- Motherplants
- Specialized in the drought-tolerant, shallow rooted species adapted to extensive and semi-extensive living roofs.
- Northeast Solite Corporation
- Produces lightweight aggregates for sale as horticulture and green roof soil builders.
- The Schundler Company
- Producer of perlite and vermiculite.
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