En EspaŅol

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.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

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
1 rating

Thursday - August 21, 2008

From: Sturgeon Bay, WI
Region: Midwest
Topic: Trees
Title: Wilting of Mountain Ash in Wisconsin
Answered by: Barbara Medford

QUESTION:

What type of disease would cause a Mountain Ash to entirely wilt? The bark on bottom of tree is opening up and is spongy feeling. No sign of any disease until last month and it quickly wilted with brown leaves. The tree is in a natural area with no soil contamination or compaction. It received plenty of water.

ANSWER:

We are going to assume that your tree is the Sorbus americana (American mountain ash), native to Wisconsin and a member of the Rosaceae family, and not Fraxinus americana (white ash), also native to Wisconsin and a member of the Oleaceae family. There are a number of diseases said to affect the Mountain Ash, and we are going to find websites that describe them and perhaps give you some information on control. Here is a Wisconsin Botanical Information System website on Sorbus americana.

University of California Integrated Pest Management Fire Blight

Nevada Plant Pathology Canker diseases on ornamental woody plants

Pictures of Bark  Canker

University of Maine Pest Management Lab Crown gall-often a problem on members of the Rosaceae family

Diagnosing and recommending treatment of a plant at a distance is nearly impossible. We suggest that you contact a trained arborist or your University of Wisconsin Extension Door County office.

 

More Trees Questions

Plant Suggestions for a Partly Sunny Steep Bank in Illinois
November 09, 2013 - I am looking to plant something on a steep clay bank on our Illinois property. It is on the edge of our dirt road with trees above the bank and is partly sunny. What would work best for that type of a...
view the full question and answer

Possible fungus growing on mountain ash (Sorbus sp. or Fraxinus sp.)
January 20, 2008 - We have a mountain ash with something growing several feet off the ground that looks like duckbills or mushrooms. Can you tell me what is wrong with it. We lost one mountain ash tree to something an...
view the full question and answer

Need a shade tree for front yard in Fredricksburg, TX.
July 16, 2012 - I live in Fredericksburg, Tx. I have a large front yard, but only one huge pecan tree in the front yard that is probably 18 years old. It shades half the yard. I want to plant another shade tree for t...
view the full question and answer

Need for smaller tree with less invasive roots from Ft. Worth TX
June 07, 2014 - The sycamore in the front yard has developed roots larger than the branches. They have decided that the water and sewer lines are perfect to acquire their water from. For this reason it will be coming...
view the full question and answer

Watering live oak trees from McAllen TX
December 24, 2012 - What are the watering requirements for live oak trees in deep south Texas? How often and how many inches to be applied? One pop-up spray sprinkler spaced approximately fifteen feet away from each tr...
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