En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Hibiscus plants being attacked by powdery mildew, or maybe mealy bugs in Austin, TX.

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

Wednesday - August 10, 2011

From: Austin, TX
Region: Southwest
Topic: Diseases and Disorders, Pests
Title: Hibiscus plants being attacked by powdery mildew, or maybe mealy bugs in Austin, TX.
Answered by: Jimmy Mills

QUESTION:

I have three hibiscus plants planted outside about a foot apart from each other. The one that gets most of the sunlight is the worse off of the three. However, all three of them have white powdery stuff on them that is killing them slowly. I have researched on the internet what this might be but nothing looks the similar to what mine has. They almost look like white pill bugs. When I touch the plant they usually fall off. I have also found some on my house around the plants. Please help. How can I get rid of this stuff and save my plants?

ANSWER:

When Mr. Smarty Plants hears about white powdery stuff on plants he thinks of powdery mildew, but since you mentioned the white bugs, he thinks its probably mealy bugs.

I’m going to provide you with several links that describe the pests, and tell how to control them.

Mealy Bugs
  Tropical Plants Library on Line - describes  several insect pests and means to control them.

  ehow.com Home - tells how to get rid of mealy bugs

  University of Florida IFAS Extension - more information about scale insects and mealy bugs

Powdery Mildew
  University of Ohio -good description with photos

  University of California -good description of the problem with solutions

 

More Diseases and Disorders Questions

Need some help with a Plumbago plant in Mission, TX.
August 06, 2010 - Hello..I live in south South Texas and have a plumbago. It gets about 4 to 5 hours of direct sun and lately some of the branches and leaves turn bright green almost yellow. Am I over watering or is ...
view the full question and answer

Bignonia capreolata with brown leaves in Pennsylvania
April 24, 2009 - 3 year old crossvine leaves brown and dead looking. Will it come back and bud out? Crossvine on fence southern exposure. Crossvine on fence in another area has leaves and are dark green/purple - sa...
view the full question and answer

Swarming insects on non-native willow in Washington PA
September 25, 2011 - I have had a very large, beautiful pillow willow bush/tree growing next to our garage for about 8 years. Last year at the end of August, it began to attract white-faced hornets and yellow jackets by t...
view the full question and answer

Need information about oak wilt and Shumard oak in Houston, Tx.
July 06, 2010 - I want to plant a Shumard red oak in my North Houston front yard, with two Nuttall oaks. I keep hearing about something call oak wilt. Is there something I can do to prevent this disease during the ...
view the full question and answer

Oak root resistant hedge for Southern California
December 28, 2013 - I live in Southern California and my cypress hedge has oak root fungus. What kind of hedge can I plant that will grow fast and be resistant to the fungus?
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