Any green growing matter - preferably gathered and added before it sets seed; pulled weeds, trimmings, thinnings, etc. We allow areas for some otherwise unimpressive native, fast-growing plants to grow here; expressly for use in the compost piles. An added bonus is that many of these plants provide a food source for beneficial insects, so leftovers or unharvested plants will still be useful.
Bloodmeal might be used, but you'll have to experiment with amounts. Too much will cause odor issues at the outset.
