is the waste product of beer brewing; spent grain, hops, yeast, have any value as a garden soil amendment?
Marion County Oregon
It would certainly be a good source of organic matter, and some nutrients. As an addition to compost, it would be considered a green, or high-Nitrogen addition, and composting it before use would probably be best. The actual nutritional content would vary depending on the specific plants used and the production methods.
Here is a good article which discusses the use of brewery waste:
and a research paper on the subject: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&cad=rja&...