I know that it can be used in some gardening but I've also read that a lot of people just bury it without spreading it around. What do you do with ash from charcoal or burning wood from a stove/fireplace? I ask because I need to clean out the grill since I think I'm going to try to smoke something this coming week since the weather will be good. I just wonder what everyone else is doing with the old ash. I only use hard wood lump charcoal for many reasons. Just wondering what others do with what is left over.