Using STA Certified Compost
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Using STA Certified Compost

Using STA Certified Compost

How do you buy high-quality compost? You buy compost with an ingredients list, test results, and suggested directions for using for that company’s product. So that you can make an informed decision about whether that particular compost product fits your needs, for each type of project you need it for. Buying from participants in the STA Certified Compost program gives you this confidence.

The program – created in 2000 – is the consensus of many of the leading compost research scientists in the United States. The US Composting Council’s Seal of Testing Assurance Program ‘STA’ is a compost testing, labeling and information disclosure program designed to give you the information you need to get the maximum benefit from compost. Currently this is the only compost testing program available that gives you this type of information. Joe Lamp’L from PBS’s Growing a Greener World explains why he values the program here.

Program Foundation

The STA Certified Compost Program is founded on highly researched compost testing methods, and careful lab oversight to give you confidence the test results are accurate for the product you purchase through the STA Certified Compost Program.

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Manufacturer Requirements

Compost manufacturers participating in the STA Certified Compost program are held to high standards for using quality labs, testing frequently, disclosing specific information about their product, and following regulations.  With these products, you can be sure that you know what you are getting.

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Suggested Uses

As with any product, the key to getting the most value out of your purchase is using the product appropriately for your intended use.  The Compost Consumer Use Program shares what test results you should be looking for and how to apply the compost for a variety of uses.

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Endorsements

Landscape architects, engineers, and Department of Transportations who have done their research into how to get exactly what they want – specify they will only purchase compost from the Seal of Testing Assurance Program.

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Sources to Buy

We are proud of our compost manufacturers who have made the grade to be included in our list of STA Certified Compost manufacturers.  Ask your local source to join if you don’t see them here yet.

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