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

Wednesday - May 09, 2012

From: San Antonio, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Small oak tree with powdery mildew in San Antonio, TX.
Answered by: Jimmy Mills

QUESTION:

I have a small oak tree with powdery mildew. Is there anything I can do about? Will it kill the tree?

ANSWER:

Almost all landscapes have plants that become diseased with one of the powdery mildews. These two fact sheets describe the disease and its cause, and give tips for prevention and control.

Ohio State University

Colorado State University

Although the powdery mildew is unsightly, it probably won’t kill your oak tree.

 

More Diseases and Disorders Questions

Problems with morning glory in Tennessee.
June 09, 2009 - I recently moved to Tennessee from Michigan. On my property I have a perennial morning glory. This year the leaves are all bubbly, the stems have white hard stuff on them and there is a brown hard t...
view the full question and answer

Long term effects of pesticide from Lubbock TX
March 20, 2013 - I have 9 western pecan trees about 20 years old. Trunk sizes is from 18" to 39". I used a product Bayer Tree and Shrub, applied to the trees. I wonder what it will do to the trees. I talkd to Bayer ...
view the full question and answer

What is causing leaf drop on oak in Morgan Hill CA?
June 23, 2010 - Dear Mr Smarty Plants: We have a large, young Valley Oak (about 20 yrs) which is dropping leaves even now in early summer. I have a feeling that the problem might be an invasive weed that is flourishi...
view the full question and answer

What about the brown dots on my Silver sage?
June 27, 2008 - During the past year, the leaves on my silver sage bushes around the perimeter of the front of my house have turned yellow in places and there are tiny brown dots on virtually all of the leaves. If I ...
view the full question and answer

Palm trees turning orange in Miami
May 24, 2010 - Why are my palm trees turning orange?
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center