These materials should be placed in plastic bags, with each bag weighing no more than 50 pounds. It is very important that no household garbage, refuse or animal waste be placed in the bag with yard waste as these contaminate the yard waste and make it unusable for composting. Branches and large roots should be tied in bundles no more than four feet in length and weighing no more than 50 pounds. Stumps should have all soil removed and be cut into pieces weighing no more than 50 pounds.