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

Sunday - September 08, 2013

From: Round Rock, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Disease or insect damage on a Mexican plum
Answered by: Guy Thompson

QUESTION:

Help, Our Mexican plum tree is about 13-14 years old. Earlier this year we noticed the trunk is oozing black stuff and whole branches are dying off. We have watched as our beloved tree has lost most of its remaining leaves this summer and want to know if this is just old age?? or perhaps something called verticullum??Chlrosis? SP? Is there anything we can do to save it outside of fumigating the ground? Would we be able to replant another Mexican plum in this location without treating the ground?

ANSWER:

Peach and plum trees are relatively short lived, often peaking around 10 years of age.  But it all depends upon conditions around the individual tree.  Your plum seems to be suffering from a fungal or bacterial disease, such as canker, or from attacks by borer insects.  The indicated websites give instructions for diagnosing the tree's problem and treating it. Deciding whether to doctor the tree or replace it probably depends upon your sentimental attachment to it.  A replacement tree should do well if you have taken the recommended precautions to destroy any pests that persist in the soil.  Also, young trees are usually more resistant to diseases than older ones.

If you do decide to replace your Mexican plum tree it would be best to wait until winter.  Replacements will be available in your local plant nurseries.

 

More Trees Questions

Trees for townhome backyard in Fullerton, CA
August 15, 2009 - Hi, I live in a townhome with a big backyard here in Orange County. Last year, I got rid of my ficus trees that had grown too tall and big for a townhome backyard. Now, I would like to plant two tre...
view the full question and answer

Protecting a non-native Meyer Lemon from Freezing in Austin
January 05, 2013 - What is the best way to protect my Meyer Lemon tree from freezing Austin weather? It has been planted in my yard for 1 year and is about 4 feet high
view the full question and answer

Retailers of possumhaw
March 11, 2007 - How can I find retailers of possumhaw (Ilex decidua)?
view the full question and answer

Small tan balls on oak from Pipe Creek TX
May 21, 2014 - Dear Mr. Smarty Plants, our spanish oak is growing tan colored lumpy balls about the size and weight of a marshmallow..sometimes just one at the end of a short stem and sometimes 2-3 clumped together....
view the full question and answer

Best time to trim oak trees to avoid oak wilt
June 08, 2008 - When is the best time to trim oak trees? Concerned regarding oak wilt if cut at wrong time. Ball moss is not harmful but will it help or harm if trees trimmed. These are large oak trees. Thank you.
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