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

Permit to transport trees in Ivanhoe TX
December 02, 2010 - Do you have to have a special permit to transport trees on a semi truck and trailer in Texas? They are Texas grown trees, just going to a different location inside the state.
view the full question and answer

Small tree for yard in Columbia TN
November 16, 2009 - I have a somewhat small yard but the construction workers put a water and sewer drain in the middle of my yard. The sewer main is located on the far side of my property my width of yard is 60 feet wid...
view the full question and answer

Native plants for wildlife habitat in West Virginia
February 05, 2008 - We live in the southern region of Summers County in West Virginia. Our yard has a lot of shell and small rocks in it; it is in direct sun light. I would love to have a welcoming hummingbird, butterfly...
view the full question and answer

Are American sycamore or hybrid poplar trees toxic to dogs in San Antonio?
August 26, 2009 - We anticipate planting an American Sycamore or a Hybrid Poplar tree in our back yard but we have several small dogs and are concerned that they may eat some of the leaves. Do either of these trees po...
view the full question and answer

Will Fragrant Ash grow in Bowie County TX?
April 24, 2011 - I live in south Bexar County in very fine deep sand. Will the Fraxinus cuspidata grow in my soil and temperature?
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