Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
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.
rate this answer
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
Problems with fruit of Mexican Plum from McKinney TX
May 19, 2013 - MY Mexican plum tree (about 5 years old) has small fruit on it. Some of them are severely deformed, and look rotten almost. They are bumpy and ragged looking. Or they are pasty white,rotten and dried ...
view the full question and answer
Leaf problems on oaks in North Liberty IA
June 12, 2010 - My oak trees (young and old) are showing leaf problems. Is there a disease or insect causing oak tree disease?
view the full question and answer
Red maple a casualty of Hurricane Ike in Houston
November 21, 2009 - We have a 3 year old Drummond Red Maple, between the sidewalk and the street in front of our house, that fell during Hurricane Ike. We replanted it. I recently noticed that the bark is severely cracke...
view the full question and answer
Sap dripping from redbud in Bertram, TX
March 03, 2014 - Our multi-trunked Texas redbud has sap dripping down 3 of the trunks. It seems to originate from a very small crack in each trunk. The tree is just starting to show pink this week, and is about to blo...
view the full question and answer
Problems with Cedar Elm in Austin, TX.
August 04, 2012 - Our Cedar Elm has yellowing very dry leaves and something is eating the topmost leaves leaving holes and obviously chewed off leaf segments. Could this be two different things? Aphids and bacteria or ...
view the full question and answer
| Support the Wildflower Center by Donating Online or Becoming a Member today. |