We thought that you might be interested in this link from the MSU extension with information about home gardens… MSU Extension | Montana State University MSU Extension is a statewide educational outreach network that applies unbiased, research-based university resources to practical needs identified by the people of Montana in their home communities.
‘Persistent herbicides’ in topsoil, manure, can wreak havoc with gardens The pain spread in unlikely media. The harvest yielded cautionary tales. And, ultimately, unfortunate circumstances provided a fertile learning experience for advanced chemistry students at Whitefish High School. The gist is this: Gardeners who feel secure about topsoil and manure probably shouldn’t.