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

Tuesday - June 12, 2007

From: Greensboro, NC
Region: Southeast
Topic: Pests, Trees
Title: Care of butternut trees (Juglans cinerea) with bumpy growths
Answered by: Nan Hampton and Joe Marcus

QUESTION:

I have two small butternuts, around 3-4 feet. One has developed very 'bumpy' reddish growths on the leaves that are actually stunting their growth. What do you think it is and what can i do to stop it?

ANSWER:

The population of butternut trees (Juglans cinerea) in Canada and the United States is being severely threatened by a fungal disease, butternut canker, Sirococcus clavigignenti-juglandacearum, but from your description this doesn't sound like your trees' problem. The bumpiness you describe sounds like work of an insect or other small invertebrate such as the eriophyid mite, Aceria cinereae. The bumps these creatures create on leaves are called galls. In general, leaf galls do no serious harm to trees, though they may cause rather unsightly deformities. Some serious infestations can cause significant leaf-drop, but otherwise healthy trees will produce new leaves and show little ill-effect. Another possibility is the walnut anthracnose or leaf blotch (Gnomonia leptostyla or Marssonia juglandis).

Considering the increasing rarity of the butternut tree, you would be well-advised to seek the help of a certified arborist to help you decide how to treat the disease and save your trees.


 

More Trees Questions

a source for fruitless olive (non-native) trees
June 29, 2012 - I was given a "mexican olive" several years ago which is doing very well. This one is non-fruiting and I would like to have another that is non-fruiting but cannot find one. Cordia boissieri see...
view the full question and answer

Medium-sized trees for Central Texas
October 25, 2013 - I need some help figuring out what 2 trees to plant to replace 2 trees that are being taken down on Monday. The input we've received from the company doing the tree cleanup is to go with a chinkapi...
view the full question and answer

Stump sprouting of Oak trees in the wildfire area in Bastrop, TX.
May 13, 2012 - We live in Bastrop, Texas, in the wildfire area. We lost all of our trees. The oak trees have "suckers" growing from the base of the burned tree that has been cut down. They look like little bushe...
view the full question and answer

Roots in mulch around Live Oak in Austin
March 10, 2011 - I have a 20 yr old Live Oak that has about 6-8 inches of mulch buildup around the base (I had landscaped around it). I went to break up the mulch to remove it from the base of the tree, but found it ...
view the full question and answer

Would like a small tree for yard in Las Vegas, NV.
May 31, 2013 - would like a small tree with root system that grows down not spread on surface. Had raywood and medesto ash tree both died of desease. Diagnosed by arborist. Stated that these trees to big for my yard...
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