OK, I posted in the commercial question about mulching up leaves. My actual question was about all the complicated things the pro LCO's worry about -- deck design, blade design, etc. I'm just Joe Homeowner, and after letting my kid play in the pile for a couple weeks, I decided to mulch it up with my cheap little electric mower. I got some rather harsh responses, but one question that came up is about mulching a big pile of leaves being bad -- too much nitrogen. I can't imagine dried out leaves having much nitrogen left in them. How would a big pile of leaves mulched up compare to something like the cracked corn that has been discussed here? Would the leaves have much left in them to serve as a carbon or protein source? These were so dry, they pretty much just turned to dust. After three passes, there was absolutely nothing left. I tried to use my blower to get rid of anything that was left and gave up as there was nothing to blow.