By JoAnne Hermens :: Heritage Tree # 31 Juglans nigra – Black walnut 7703 SE Martins In Southeast Portland amidst modest houses with pleasant green yards, stands a 90 foot tall and 90 foot wide black walnut tree. An aerial view shows its canopy reaching across 77th Avenue, away from the two story white woodenContinue Reading Heritage Tree #31 | Black Walnut