Biosolids compost - GroCo

GroCo biosolids
compost

Biosolids compost improves soil health and provides plant nutrients, and composts like GroCo may be safely used as a soil conditioner for landscaping, lawns and home gardens. Gardeners like how GroCo aerates their soils, retains moisture and produces beautiful blooms, enhancing the sustainability of their landscapes and gardens.

What is GroCo compost?

Three parts sawdust and one part biosolids are blended and composted to create a fine-textured 'exceptional quality' biosolids product. GroCo has been marketed since 1981 and has a loyal following with commercial landscapers. The general public uses GroCo for landscaping and gardening.

Where can I get GroCo compost?

It is available throughout the greater Seattle area and at Sawdust Supply, Inc., 6314 7th Avenue South, Seattle, 98108.

King County contracts with a local private company to make GroCo.
For information: 206-622-5141

Download our GroCo Information Sheet (PDF, 520KB) for a summary of information on GroCo.