We use horse manure every fall and spring. But, I know that before we spread it onto our soil we always mix in some hay and grass and water that down into our soil first.. but some other farmers that we know say horse manure is not all that strong and won't burn out plants like other materials can. You may be ok.We just decided to start a vegetable garden, were givin fresh horse manure. We spread and tilled it without composting .
How big of a mistake did we make?