En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Loss of leaves from globe willows in Utah

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.

Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - July 26, 2008

From: Kaysville, UT
Region: Rocky Mountain
Topic: Non-Natives, Diseases and Disorders, Pests, Trees
Title: Loss of leaves from globe willows in Utah
Answered by: Barbara Medford

QUESTION:

I have four globe willows that have been in my back yard for the past 6 years. For the past month they have been losing their leaves from the bottom up. We had aphids in some of our other trees and were sprayed as well as the globe willows, however, the willows are still losing their leaves. Any suggestions as to why this is happening?

ANSWER:

Salix matsudana, globe willow, is a native of eastern Asia. Willows generally are fairly weak, short-lived trees, susceptible to many insects and diseases, as well as dropping a lot of litter. The globe willow is often infected with slime flux, a bacterial disease that is soil-borne. They are frequently found in the Rocky Mountain area, in warm valleys, so while they are not native to North America, they are at least well adapted to the area in which you live.

This Colorado State University Extension The Globe Willow has excellent information on the care and problems facing this tree. Be sure and follow the links from the home page to see "Introduction," "Diseases and Insects," and "Aphids." In the last one, on aphids, follow the link to images of the giant willow aphid. If we saw something that big coming for us, we would probably drop some leaves, too. On that same webpage, there is some excellent advice: Always check with the Extension office in your county or state for specifics on pesticide selections and use. The website for your Davis County Extension office is apparently still under construction, but you can contact them at 28 E. South St., Farmington, UT 84025, phone 801-451-3412.

 

 

More Trees Questions

Why do my Possumhaw Holly berries fall of in the summer in Euless, TX?
June 28, 2011 - My possumhaw holly has LOTS of green berries in the spring but they fall off in summer, so that I have only a handful of red berries in the winter. What is going wrong?
view the full question and answer

Identification of tree with red feathery leaves
March 08, 2012 - What is the name of a tree with dark red leaves, feathery, slim trunk; maybe in the pepper family? Jedi?
view the full question and answer

Transplanting Ilex x attenuata (Savannah holly)
July 31, 2014 - Is it hard to take a savannah holly out of my front yard? Do the roots grow down deep or are they more shallow? I can only take a 36-40 rootball circumference because of surrounding established shru...
view the full question and answer

Fast-growing evergreens for privacy in Center, TX
March 30, 2010 - I live in East Texas and am looking for a fast growing evergreen for a privacy screen around my backyard. The area gets partial sun and the soil has a lot of clay in it.
view the full question and answer

Loss of bloom on Fremontodendron californicum in California
June 11, 2009 - The flowers on my Flannel Bush all died at once I have noticed a sappy substance at the base of the trunk. There are still some flowers on bush but most are dead. It has been blooming since Feb. Is ...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center