Lab Test Results
Know what's in your soil before it's in your garden.
We send our soils and composts to an independent, US Composting Council–certified lab, and post every result here. The strong points and the weak spots, so you can pick the right material and know what, if anything, to add.
ALWAYS THE LATEST TEST
Each product shows its most recent lab result
Earlier tests stay available on each product's results page.
Tested by an independent lab - not by us
Current Results
50/50 Lawn Mix
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Soil
50/50 Lawn Mix
Results Pending
Fine Prep Compost
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Compost
Fine Prep Compost
Results Pending
70/30 Lawn Mix
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Soil
70/30 Lawn Mix
Results Pending
Garden Mix
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Soil
Garden Mix
Results Pending
LOOK UP YOUR BATCH
Lot number (printed on your delivery invoice or pick up receipt)
Lot not found, call our office for assistance.
How to read a lab test
Every results page answers the same four questions: