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“Soil-less” light-weight growing medium that excludes these:

• Fertilizer which may cause burning or “???” stunting of seeds
• Clay which can hold too much moisture
• Organic elements, which can separate sees from the medium
• Fungi or bacteria, which may kill or stunt seedling

Used to provide nourishment for growing seedlings once they are ready for the real world. Potting soil contains some earth soil, as well as compost or manure peat moss or vermiculite.

This is a commercial name for an indeterminate mix of earth soil (maybe), sand, compost (maybe), shredded forest products, bark and who knows what else. There is no standard. What one company sells by this name may look and be quite different from that sold by another company.

I have been buying this from a local supplier for leveling, starting turf and filling holes to replace the native soil. I can tell it has some earth soil, some sand and some shredded forest products. I mix it with Tagro from the City of Tacoma's municipal waste department.

Tagro (https://tagro.com/products-pricing/) products created and marketed by the City of Tacoma. TAGRO products are made from a blend of pasteurized wastewater byproducts called biosolids and other weed-free gardening components.

For detail about TAGRO Potting Sil and Topsoil see https://tagro.com/products-pricing/.

TAGRO Mix is a soil amendment that is a blend of 50 percent “Class A—Exceptional Quality” biosolids, 25 percent sawdust and 25 percent screened sand. TAGRO:

• Breaks up and aerates heavy soils
• Helps soil retain moisture
• Provides a slow release of nutrients such as nitrogen and phosphorous

We have used TAGRO Mix with flower beds, container and raised bed. Plants grow quickly and boldly.