Protect Your Garden From Killer Compost

Use our home test for safe compost and avoid contaminating your soil.
April/May 2010
It might look good, but killer compost infused with herbicide residue can cause crop damage.


If you’re planning to bring compost, manure, hay or other mulches into your garden, be aware that there are some widely used herbicides that can persist in these materials and cause damage to your garden crops.

If you can’t confirm with the source that you’re getting safe compost, there is a way you can plant a few seeds in a sample to test whether herbicide residues are present. See our home test for safe compost for directions, along with links to our earlier reports on this unfortunate situation.