I spoke with Paul not too long ago about 'not adding outside stuff' into my Hugel beds because, in truth, you can't rely on it to be contaminant free.
I am now most assuredly against adding horse manure compost since it frequently contains persistent herbicides and stuff like that.
However, the topsoil that I used in my hugel beds just isn't a very rich soil and I need to add something... so I've decided to consider grass/leaf compost from the local recycling center.
Leaf compost I'm sure is 100% fine... no one is treating leaves and trees in their yard with herbicides.
My concern is the grass... I'm not sure what kind of pesticides or weed killers might have been put into people's lawns, and I'm wondering if you guys think it would be ok to add some of this stuff to richen up the soil.
It's certainly an 'organic' way to add some nutes, I just don't want to do more harm than good.