In 4 to 6-quart slow cooker, combine pork, onion, bamboo shoots, teriyaki baste and glaze and gingerroot; mix well.
Cover; cook on low setting for 5 to 7 hours.
About 15 minutes before serving, stir vegetables into pork. Increase heat setting to high; cover and cook an additional 10 to 15 minutes or until vegetables are tender.
Meanwhile, cook rice in water as directed on package. Serve pork mixture over rice.