How much compost do you need?

Healthy plants start with healthy soils. Healthy soils need organic matter.   The calculator below uses data from your soils test and data from your compost provider.  If you don’t have the data, some suggested amounts are provided below.

Enter results from your solids and compost lab report. (For more Information on soils testing,  visit

Example Soil Bulk Densities (g/cc)
Sandy Loam 1.4
Loam 1.2
Silt Loam 1.2
Clay Loam 1.1
Clay 1.1