information
COVID-19 Recovery and Resilience

Access City programs, people and projects designed to help Portland recover. Portland United
Volunteer. Play. Stay. Shop. Show the Rose City a little love. Be Here for Portland.

Juglans nigra

Information

Black Walnut 

FAMILY: JUGLANDACEAE

Juglans nigra - Black Walnut

About Black Walnut at OSU's Landscape Plants site

  • Native to eastern North America.

  • Can exceed 160’.

  • Leaves are compound with 13-27 leaflets.

  • Nuts are tasty but hard to crack and extract the meat.

  • Wood is extremely valuable.

  • Fall foliage is yellow.

  • Common in Portland. Many planted over 100 years ago.

  • #35 was planted in the late 19th century on the Jacob Kamm estate, 13 acres bordered by SW Salmon, SW Jefferson, SW 14th and SW 18th. The Kamm house was moved in 1950 to SW 20th and Jefferson to make way for Lincoln High School.

Tree #LocationDimensionsPhoto and Notes
31

7703 SE Martins St

Right of Way

90' Height

90' Spread

13.2' Circ.

The tree is along SE 77th Ave.

Juglans nigra - Black Walnut
35

1600 SW Salmon St

Portland Public Schools

85' Height

75' Spread

13.8' Circ.

This tree is at Lincoln High School, on the corner of SW Salmon and SW 14th Ave.

The tree was planted in the late 19th century on the Jacob Kamm estate, 13 arces bordered by SW Salmon, SW Jefferson, SW 14th and SW 18th. The Kamm house was moved in 1950 to SW 20th and Jefferson to make way for Lincoln High School.

Juglans nigra - Black Walnut
58

1942 SE 30th Ave

Private, Front Yard

60' Height

66' Spread

13.1' Circ.

Juglans nigra - Black Walnut
108

2830 N Williams Ave

Private, Rear Yard

77' Height

98' Spread

15.7' Circ.

This tree is fully visible from N Graham St.

Juglans nigra - Black Walnut
150

4404 SE 35th Ave

Private, Rear Yard

70' Height

84' Spread

17.9' Circ.

Juglans nigra - Black Walnut
151

4818 SE Tenino Dr

Private, Front Yard

80' Height

87' Spread

12' Circ.

Juglans nigra - Black Walnut