En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Round growths on Mexican buckeye

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

Monday - April 28, 2008

From: Austin, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Round growths on Mexican buckeye
Answered by: Nan Hampton

QUESTION:

I have two pink buckeyes next to each other in my yard. The branches on one are completely covered in brown, round growths about the size of a pill bug. The other tree has none. Can you tell me what they are and if its a problem for the tree?

ANSWER:

I am supposing your trees are Ungnadia speciosa (Mexican buckeyes), but I haven't been able to find any pests or diseases that are associated with this species. In fact, Florida Cooperative Extension Service says "No pests or diseases are of major concern." However, the growths on your one tree sound like galls. Although they can be caused by fungi, nematodes and bacteria, they are most commonly caused by insects. The female insect lays its egg on the plant and the plant, usually a tree, reacts by producing a growth around the egg that isolates it. The insect larvae that hatches from the egg grows by feeding on the substance of the gall and then chewing its way out to continue its life.

Although they may be unsightly, galls are not considered seriously harmful to the tree. Using insecticides for controlling the insects after the galls have been formed is not effective since the pests are protected inside the gall.

It is interesting that one tree has galls and the other hasn't.


Ungnadia speciosa

Ungnadia speciosa

 

 

More Diseases and Disorders Questions

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

Oak sap dripping on driveway in Austin
November 06, 2011 - Why would oak sap be dripping on driveway at this time when other oaks the neighbors have are not.
view the full question and answer

Is it normal for the bark to fall off an oak tree in Austin, TX
May 02, 2013 - Is it normal for live oak bark to fall off when touched? I am afraid to get near them?
view the full question and answer

Wilting stems on beautyberry in Georgetown, TX
August 16, 2009 - Last summer I discovered that a 4-year old beautyberry had one (of many) stems that died. Leaves on this single stem wilted and dried up. This year the same happened to two or three stems. The rest of...
view the full question and answer

Redbud leaves turning yellow in mid-summer
July 13, 2012 - The leaves on our redbud trees are turning yellow. The yellow leaves are pale with no other spots and no dark veins. I don't know for sure which variety of redbud they are or how old they are (more t...
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