{"id":16970,"date":"2020-02-18T17:58:41","date_gmt":"2020-02-19T01:58:41","guid":{"rendered":"http:\/\/extension.wsu.edu\/clark\/?page_id=16970"},"modified":"2025-08-05T11:05:09","modified_gmt":"2025-08-05T18:05:09","slug":"black-walnut-2","status":"publish","type":"page","link":"https:\/\/extension.wsu.edu\/clark\/master-gardeners\/community-education\/heritage-tree\/black-walnut-2\/","title":{"rendered":"Black Walnut"},"content":{"rendered":"

Master Gardener Program
\n<\/span><\/strong>Erika Johnson, Program Coordinator
\nerika.d.johnson@wsu.edu<\/a>
\n(564) 397-5738<\/p>\n

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Catalog of Trees<\/strong><\/span><\/h1>\n

\"Heritage<\/strong><\/span><\/p>\n

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Black Walnut<\/strong><\/span> HT5<\/span><\/p>\n

\"Black<\/p>\n

Tree Statistics<\/strong><\/span>
\nCommon Name: <\/span>Black Walnut
\n<\/span>Botanical Name: <\/span>Juglans nigra
\n<\/span>Trunk DBH (diameter at breast height: <\/span>74 <\/span>inches
\nHeight:<\/span> 115+ feet
\nSpread:<\/span> 88 feet
\n<\/span>Heritage Tree ID:<\/span> HT5<\/p>\n

Tree Location
\n<\/strong><\/span>Sunnyside Neighborhood Association
\n<\/span>9500 NE 107<\/span>th<\/sup><\/span> St
\nVancouver, WA 98662
\n<\/span>View in Google Maps<\/a><\/p>\n

About the Species
\n<\/strong><\/span><\/p>\n

Juglans nigra, the\u00a0eastern American black walnut, is a\u00a0species\u00a0of\u00a0deciduous\u00a0tree\u00a0in the\u00a0walnut\u00a0family,\u00a0Juglandaceae, native to\u00a0North America. It grows mostly in\u00a0riparian zones, from southern\u00a0Ontario, west to southeast\u00a0South Dakota, south to\u00a0Georgia, northern\u00a0Florida\u00a0and southwest to central\u00a0Texas. Wild trees in the upper\u00a0Ottawa Valley\u00a0may be an isolated native population or may have derived from planted trees.<\/span><\/p>\n

Black walnut is an important tree commercially, as the wood is a deep brown color and easily worked. The fruits, walnuts, are cultivated for their distinctive and desirable taste. Often, trees are grown for both lumber and walnuts simultaneously and many cultivars have been developed for improved quality nuts or wood. Black walnut is currently under pressure from the\u00a0thousand cankers disease\u00a0that is causing decline of walnuts in some areas. Black walnut is also\u00a0allelopathic, which means that it releases chemicals from roots and other tissues that harm some other organisms and give the tree a competitive advantage; this is often undesirable as it can harm garden plants and grasses.<\/span><\/p>\n

History of This Tree
\n<\/strong><\/span><\/p>\n

The previous owners said the tree was large when they bought the house in 1949. The house was built on 1902 and they think that the tree was full grown then. It’s been cut in half twice because of its growth.\u00a0 During World War II the owners were offered a substantial amount of money for the tree for furniture but they turned it down.<\/span><\/p>\n

\"Black<\/p>\n

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Our pages provide links to external sites for the convenience of users. WSU Extension does not manage these external sites, nor does Extension review, control, or take responsibility for the content of these sites. These external sites do not implicitly or explicitly represent official positions and policies of WSU Extension.<\/em><\/p>\n\n\n\n
WSU Clark County Master Gardener Program<\/strong>
\n1919 NE 78th Street \u2022 Vancouver, WA 98665
\n(564) 397-5738
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\"Answer<\/a>\"Gardening<\/a><\/p>\n

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