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Thursday - September 18, 2008

From: Red Hook, NY
Region: Northeast
Topic: Non-Natives
Title: Problem with non-native weeping willow
Answered by: Barbara Medford


I have a weeping willow tree that is approximately 6 years old..The problem is a fibrous growth is growing between the trunk & the bark -pushing the trunk & bark away from each other..Not sure what it is & what can be done..Any info would be greatly appreciated. Thank you.


Thank you for your question. While we would like to answer all questions we receive, Mr. Smarty Plants' expertise is limited to plant species native to North America, their habitats and cultivation. Limited resources require us to decline answering questions that delve into other areas. We hope you understand.

Non-native to the United States, Salix x sepulcralis is a hybrid of a Chinese species (Peking willow) and a European species (white willow), and is said to grow in Zones 5 to 8 in the United States. It is weak-wooded, fast-growing and, therefore, short-lived. It has aggressive roots, can lift sidewalks and interfere with sewer lines, often growing on soil surface, making a problem with mowing. It is susceptible to a number of pests and diseases, and notorious for littering the ground beneath it. You might check out this University of Florida Extension website on Weeping Willows for more information as well as this Q&A from North Dakota State University Extension on weeping willows.The UBC Botanical Garden Forum is also a good source of information on non-native plants. 


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