American Elm - Arbor Month 2026 - Tree of the Week

Week Three: American Elm

This was recognized as Heritage Tree #23 in 2010 and measures in at 71” DBH (diameter at breast height.) It is the only American Elm tree listed as a Heritage Tree in the City. American Elms once lined nearly every main street in the country before Dutch elm disease (DED) devastated populations in the 1930s. DED has killed roughly 75% of American elms in North America, reducing the typical life span of these trees from over 200 years to less than 30.

Видео American Elm - Arbor Month 2026 - Tree of the Week канала City of Lake Oswego