Native Plants
Q. Who is Mr. Smarty Plants?
A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Thursday - June 26, 2008
From: Woodinville, WA
Region: Northwest
Topic: Non-Natives
Title: Distressed non-native weeping willows in Washington State
Answered by: Barbara Medford
QUESTION:
What could be causing my weeping willows to be distressed year after year?ANSWER:
We have been getting a lot of questions along the same line as yours; that is, poor performance of weeping willows. We all have mental images of blue willow dinnerware, Chinese drawings and post cards of the beautiful, romantic weeping willow. Unfortunately, in real life, it doesn't do too well in most parts of North America.
Although there are 54 members of the Salix genus that are natives to North America, the weeping willow, or salix x sepulcralis, is not one of them. It is a hybrid of the Chinese Peking Willow and European white willow. This USDA Forest Service website has some more information on the weeping willow, citing the fact that it is considered invasive in several states, including Washington. The same site says that the tree is susceptible to several diseases and insect damage. The Lady Bird Johnson Wildflower Center is dedicated to the protection, planting and propagation of plants native to North America, so we do not have information on this tree in our Native Plant Database. However, we are always glad to try to provide information on plant care for plants already in the landscape.
One thing we learned is that the weeping willow is a very fast-growing tree, growing up to 8 ft. a year. It also has very brittle stems-those two factors combined can cause a tree to start to break down. Fast-growing trees are usually a bad idea, as they will age quickly and begin to deteriorate. Go to this introductory page to the Washington State University King County Extension office. There are several links and contact information for agriculture and forestry. If one of the diseases or insects that plague weeping willows is causing problems in your area, the Extension Service office should have some information on it. Here is a page of images of salix x sepulcralis.
If you are considering replacing your tree, we will try to find some suitable replacements for it. We went first to our site on Native Alternatives to Invasive Plants. We found a list of nine trees, none of which, unfortunately, are native to Washington State. We next went to our Recommended Species webpage, selected Washington and tree for our search and got eight options which we will list for you. If you decide to replace your tree with a native, go to our Suppliers list, type your city and state in the Enter Search Location box and you will get a list of native plant suppliers such as nurseries, seed companies and landscape consultants in your general area.
Betula occidentalis (water birch)
Juniperus scopulorum (Rocky Mountain juniper)
Pinus contorta (lodgepole pine)
Pinus ponderosa (ponderosa pine)
Populus tremuloides (quaking aspen)
Pseudotsuga menziesii (Douglas-fir)
Prunus virginiana (chokecherry)
Tsuga mertensiana (mountain hemlock)
More Non-Natives Questions
Invasiveness of non-native gooseneck yellow loosetrife in Maine
May 12, 2005 - I live in Maine, and purple loosestrife is invading our habitat. It outcompetes native species. Does gooseneck loosestrife have the same damaging qualities?
view the full question and answer
Problems with non-native weeping willow from Hazlet NJ
July 03, 2013 - Leaves turning yellow on weeping willow planted in May. What causes this and how can I fix it? Mother's Day gift after SANDY uprooted huge tree.
view the full question and answer
Plant native Lantana urticoides and not non-native
March 09, 2015 - San Antonio Water System does not want to assist invasive plants but we want to encourage Lantana sp but we need to know what Lantana camara hybrids are sterile
view the full question and answer
Care for 'Winchester' honeysuckle?
June 05, 2009 - I have a Winchester honeysuckle that is now in full bloom. Do I "deadhead" the blooms after they die off?
view the full question and answer
Cross pollination of orange and crapemyrtle
November 05, 2007 - I have a crapemyrtle tree growing 3 feet from a navel orange tree. This summer a shoot grew from the ground 5 inches from the orange tree. The shoot looks just like the orange tree but the leaves were...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |