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

Over-trimmed junipers in Shell Beach CA
May 16, 2010 - Help! My husband decided to "trim" the juniper bushes that are in front of our house that create a great private front yard. I guess he cut back into the dead wood and now nothing is regrowing. It'...
view the full question and answer

Fast growing, native fruit trees for Northeast Texas
January 23, 2007 - What kind of fruit tree will grow fast and be pretty in Northeast Texas?
view the full question and answer

Recently planted Monterey Oaks doing poorly in Jourdanton, TX.
September 02, 2013 - We planted 2 nice size Monterrey oak trees in April .they were doing good with new growth on them. But now I have been noticing the leaves are turning brown around the edges. We water about once a wee...
view the full question and answer

Controlling native chickasaw plum
July 23, 2008 - How do we kill the chickasaw plum? We have an abundance and want to get rid of them.
view the full question and answer

Can Live Oak suckers be mowed during Oak Wilt spread season in Austin?
April 12, 2010 - I live in South Austin, not too far from the Wildflower Center. I have a Live Oak in my yard with a substantial amount of sucker growth from the roots. Can I mow them freely throughout the year, or ...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center