When we conduct grafting workshops at Mercy Acres we will usually have at least a dozen varieities of applie scions and a dozen varieties of pear scions. Scions can also be acquired at a local scion swap organized jointly by the Edible Tree Project and the Spokane County Extension Office. The Washington State University horticulture site also maintains a list of organizations that supply scion wood. Bob Purvis also has a very wide selection of scions, including stone fruit, especially cold-hardy apricots.