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

Tree protection during construction
February 18, 2008 - What measures can/should be taken to ensure the health, future of live oaks while building a new home? There are many small to medium oaks on this property, some very close to the house site and the o...
view the full question and answer

Plants for under non-native fruitless mullberry trees from Ft. Worth TX
June 28, 2012 - I live in Tarrant county, where summer droughts are the norm. I have a 150x50 foot swathe of mature "fruitless mulberry" trees, which create a very shady atmosphere. The soil is clay dominated, ro...
view the full question and answer

Should I plant a Beech Tree in Austin, TX
October 06, 2009 - I'm considering planting a beech tree but most of the gardeners I've talked to think it won't do well in central Texas. The main issue seems to be an inadequate dormancy period due to our mild wint...
view the full question and answer

Fast-growing trees for privacy in East Texas
September 02, 2013 - Fast growing tree seeds for my area to create a tree grove for privacy.
view the full question and answer

Oak sprouts in flower bed in Colleyville TX
April 04, 2011 - We have a raised flower bed in our back yard that includes 2 live oak trees. We have a TON of shoots that keep popping up and make our bed look very untidy. My husband doesn't think the shoots are ...
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