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
Not Yet Rated

Thursday - November 11, 2004

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Bacterial wetwood disease in ash tree
Answered by: Nan Hampton

QUESTION:

I have an Ash tree in my front yard. It's about 25 - 30 years old. About 2 months ago, it began to ooze sap from a point where a limb had been pruned, I'd say, about 15 - 20 years ago. So this cut was healed and ok. So the sap is running, it's clear and bubbly. It is surrounded by moths, bees and flies!! When I come home from work, it is hissing. Really, my tree hisses. My son figures it's posessed. My question to you is: what's happening here?!?!?! Is this normal? Any advice is welcome.

ANSWER:

A possessed tree, eh? Just in time for Halloween!
I can't be sure but it sounds as if your tree has "bacterial wetwood" disease. This sounds dire, but actually it is not particularly serious. The University of Illinois Extension gives a description of the disease and recommendations for treatment. Colorado State University also has web page information about wetwood disease. In neither of these articles do they mention that the trees "hiss" but they do mention gases produced by the disease that certainly could produce a hissing noise escaping from the tree.
 

More Trees Questions

Pruning for native oak in Houston
October 06, 2008 - I have an oak tree, and I was wondering if I prune from the top down, would it get fuller at the bottom? Or can you tell me how to prune it? I have been pruning from the bottom up and it is growing ta...
view the full question and answer

Tx Mt. Laurel and Mex. Buckeye seed propagation in drought
July 01, 2011 - I live in the Hill Country near New Braunfels. Since I am only at my house in July and August, I would like to plant both Texas Mountain Laurel and Mexican Buckeye from the seeds harvested from mothe...
view the full question and answer

Patio materials under a native oak trees in Missouri
March 02, 2009 - Is it safe to build a pavestone patio (with gravel sub base, Geo tech 101 fabric and sand bed..around two 50+ year old native oak trees? I know concrete would compact and cause damage to the surface ...
view the full question and answer

Privacy Screening of House Next Door in NC
June 26, 2013 - Hello, I live in the house my parents bought in 1971 in Winston-Salem, NC. The house beside me is an eyesore and for sale at a very low price. I am afraid the condition of the house and yard next door...
view the full question and answer

Dirt piled up around trunk of cypress tree in Lakeland FL
October 02, 2009 - I have a 30-40 foot cypress tree that has just started looking like it is dying..limbs on top are drooping badly. In April of this year we put probably 3 feet of dirt/clay around the bottom of it, wa...
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