Specifications include, but are not limited to: 1. All stock shall be nursery grown for a minimum of two (2) growing seasons prior to delivery. 2. All stock shall be free of disease, harmful insects, damage, defects, disorders and deformities. 3. Trees shall have single straight trunks, single dominant central leaders when characteristic of the species, and well balanced branch systems. Trunks shall be trained to be free of branches to a height of six (6) feet. Major branches shall not be removed prior to shipping to meet this specification. 4. Root systems shall be large enough to allow for full recovery of the plant, and shall conform to standards as appear in the most current revision of the American Association of Nurserymen's American Standard of Nursery Stock ANSI Z60.1