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

Tuesday - July 14, 2009

From: Cincinnati, OH
Region: Mid-Atlantic
Topic: Diseases and Disorders
Title: Yellow-orange fungus on Ash tree in Ohio
Answered by: Nina Hawkins

QUESTION:

Dear Mr. Smarty Plants, I have a large ash tree which started growing some yellowish orange fungus around the base this spring. With this fungus there are also black bugs with a orange marking near its head and another marking across its lower back section, both running horizontal. They seem to be working on the fungus at times. Do you have any idea what these are, or what to do about them? Thanks a bunch for your time.

ANSWER:

I think the black and orange bug you have is a type of Pleasing Fungus Beetle, probably the Red-banded Fungus Beetle, Megalodacne fasciata that typically feed on bracket fungi, Ganoderma spp.  The bugs themselves are likely only interested in the fungus and pose no harm to the ash tree.  Ganoderma is a wood-decaying fungus that has no cure and will eventually kill your ash tree - though this could take many years.  Since visibility of the brightly colored fruiting body is often indicative of advanced root decay and structural instability, you may want to have the health of the tree evaluated by an arborist if the tree is in a location where it could harm structures or other trees when it falls.  Trees are often infected by fungi when the trunk or lower roots are wounded.  This fact sheet, How to Care for Tree Wounds, by the Ohio State University Extension provides information that may help you prevent other trees on your property from contracting fungal infection.  If the tree is not in danger of harming anything else when it falls, you might enjoy taking the 'live and let die' approach.  As the Pleasing Fungus Beetles you noted are clear evidence of, trees in all stages of decline and death are a rich part of natural habitat and attract a myriad of creatures and insects who rely on them for food and shelter.

 

 

 

 

 

 

 

More Diseases and Disorders Questions

Problems with evergreen sumac in San Antonio
May 03, 2012 - I planted 5 5-gallon (approximately 2 feet tall) evergreen sumac in early January. Since that time they have sprouted out new shoot with new leaves several times - every time the leaves have wilted a...
view the full question and answer

Dry browning leaves on Monterrey Oak from San Antonio
August 08, 2013 - I have a Monterey Oak that was planted four years ago and was doing great until the last two weeks. It has turned brown and the ends of the branches are very dry and brittle. The root flare was cov...
view the full question and answer

Native firebush dying in Sun City Center FL
July 17, 2009 - I have a native firebush, it is suddenly dying branch by branch, from the inside out, I have noticed odd things look like wasps but with speckled wings on it. What could be killing it. The inside bra...
view the full question and answer

Mildew and rot in navel orange tree in California
September 02, 2008 - I have a great navel orange tree that seems to have two problems. One of them looks like powdery mildew and the other is some kind of black rot. I have sprayed it several times to no avail. I live ...
view the full question and answer

Non-native red-tip photinias dying in San Antonio
August 20, 2009 - A 17 year old Red tip Photinia in a hedge shows signs of dying. The main stalks are quite large and offshoots from two of the stalks have brittle, drooping leaves. The center of the plant looks norm...
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