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 02, 2009

From: Marble Falls, TX
Region: Southwest
Topic: Diseases and Disorders
Title: What to do about powdery mildew on Pavonia lasiopetala?
Answered by: Jimmy Mills

QUESTION:

My Pavonia lasiopetala seems to have gotten mildew this spring. I was hoping that warm weather would get rid of it. Instead it has spread to most of the plants which are located in widely separated beds. Should I pull it all out? Or will it recover? I can't see that it has affected any of the other plants in the same beds.

ANSWER:

Pavonia lasiopetala (Texas swampmallow) is a popular garden accent plant throughout Texas, even though it originates on dry, rocky woods or banks of South, Central or West Texas. Like many other species in the mallow family, it is very susceptible to powdery mildew.  While pavonias leaves are sometimes greatly disfigured, the plant is seldom seriously injured by an infestation of mildew.  Before pulling it out, I would suggest trying to control the mildew. I've listed some websites that explain mildew, its causes and treatments, including both organic and chemical remedies.

Golden Harvest Organics

Lawncare

Washington State University Extension

Alabama Cooperative Extension System

Another source of information is the Burnet County Extension Office.


Pavonia lasiopetala

Pavonia lasiopetala

 

 


 

 

 

More Diseases and Disorders Questions

Problems with gnats in dirt
December 27, 2008 - I have problems with gnats in my dirt. It's something I can't get control of. What can I do?
view the full question and answer

Recovery of water-stressed Agarita
August 11, 2014 - Hello! I planted a small agarita at the end of May and then left town for six weeks. During that time it was supposed to receive weekly deep irrigations to help it establish, but it seems that som...
view the full question and answer

Time to trim oak trees in Austin
October 29, 2011 - We have several large oak trees in desperate need of a good trimming. Given that the trees have had a very stressful drought year, when would be the best time to trim them?
view the full question and answer

Yaupon in bonsai failing to thrive in Lufkin TX
July 16, 2009 - Hi,I have a yaupon that I've turned into a bonsai. It's been producing new vegetation until about a month ago. Then all of a sudden the branches started drooping and the leaf tips started turning bl...
view the full question and answer

Brown flakes on prickly pear in Los Angeles
June 03, 2008 - I live in Los Angeles CA. I have desert type plants in my landscape. I have prickly pear cactus that have developed some light brown, almost golden flakes on the skin of the pads. I believe it is call...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center