Hi Mike, I am sure I read somewhere that dried cut weeds are still classed as greens because, as they were green when cut, the minerals etc are still present, once you add water they are much the same as before. I don't have access to straw bales etc so rely on a local resource which in my case is cardboard, the super markets have tons of the stuff. I only have a small back garden but I place the CB under trees and bushes where the wind and rain + bird poo start to break it down before the shredder does its job. I have 9 small scale experiments going at this time, sawdust and urine, leaves and coffee grounds, comfrey/kitchen scraps/CB etc etc and these are what are local to my area, have a look at your place and surrounding areas, breweries coffee shops super markets, cheers Dave NE UK