Green Earth's Garden Compost meets the DNR's S100 Standard.

Engineered Soil Blends
(Rain Garden Soil)
This is a soil blend engineered for rain garden applications or bioretention cells. Can also custom blend to engineer specs.

60% Coarse Sand
20-40% Garden Compost
20% Topsoil (optional)


DNR Recommended Specifications

Green Earth

Yard Materials Compost

Organic Matter

Min. 40% Organic Matter

 

48.71 %

Carbon to Nitrogen ratio

Shall be between 10-20:1

 

10:1

pH

pH shall be between 6-8

 

7.7

Soluble Salts

Shall be below 10 dS/m

 

4.43 dS/m

Moisture Content -Shall be between 35% - 50% by weight

 

35%

Nitrogen (N)

.91%

Phosphorus (P)

.21%

Potassium (K)

.70%

Pathogens

Shall be minimized and Pathogenic contamination shall be in compliance with US EPA 503

Negative for all tested:

E. Coli, Salmonella, and Fecal Coliform

 

Stablilty

Compost Very Stable

 

Screened

77% passes through a 5/32 inch screen