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The City of Portland, Oregon

Portland Parks & Recreation

Healthy Parks, Healthy Portland

Phone: 503-823-7529

1120 SW Fifth Avenue, Portland, OR 97204

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Juglans nigra

Black Walnut Leaf and SeedBlack Walnut 

FAMILY: JUGLANDACEAE

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 # Location Dimensions Photo and Notes
31

7703 SE Martins St
Right Of Way

90' Height
90' Spread
13.2' Circ.

This tree is along SE 77th Ave.
Heritage Tree 31
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 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.
Heritage Tree 35
58

1942 SE 30th Ave
Private, Front Yard

60' Height
66' Spread
13.1' Circ.

 Heritage Tree 58
108

2830 N Williams Ave
Private, Rear Yard

77' Height
98' Spread
15.7' Circ.

This tree is fully visible from N Graham St.
Heritage Tree 108
150

4404 SE 35th Ave
Private, Rear Yard

70' Height
84' Spread
17.9' Circ.

Heritage Tree 150
151

4818 SE Tenino Dr
Private, Front Yard

80' Height
87' Spread
12' Circ.

Heritage Tree 151