An exceptional tree is a “tree or group of trees that because of its unique historical, ecological, or aesthetic value constitutes an important community resource, and is determined as such by the Director according to standards and procedures promulgated by the Department of Planning and Development.”
“An exceptional tree is a tree that:
Is designated as a heritage tree by the City of Seattle; or
Is rare or exceptional by virtue of its size, species, condition, cultural/historic importance, age, and/or contribution as part of the grove of trees as determined by the method discussed below."