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Compost made with Loop® has enriched Pacific Northwest landscapes for decades.

The King County Biosolids Program partners with a local composter, GroCo Inc., to make the compost product, which is sold under the brand name “GroCo compost.” GroCo compost is both a local and recycled product because it is made up of one part Loop and three parts sawdust from area mills.

Compost made with Loop undergoes a year-long composting and curing process and is clean, consistent, and weed-free! With a full suite of nutrients and loads of organic matter (just like Loop itself) compost made with Loop builds healthy soil, holds water, and grows lush gardens and landscapes.

GroCo compost product information

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