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

Friday - June 15, 2007

From: Austin, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Whitefly infestation in roses and salvia
Answered by: Joe Marcus

QUESTION:

Several of my outdoor plants (including Knockout roses and salvia) have a white residue on the stems. If I touch it a white bug jumps off. The residue can be wiped off or sprayed off, but the little bugs just return and back it comes. The bug look almost like a tiny moth.

ANSWER:

The pest you described is probably Whitefly. Whiteflies are persistent and pernicious pests that have become a more serious problem in recent years. Happily, there are any number of biological, non-chemical and chemical control methods for you to choose from to rid your plants of these pests. Which method you choose will depend on your personal preference and the conditions in your garden. Any of the better garden centers in your area will be able to advise you on your choices.
 

More Diseases and Disorders Questions

Hypoxylon Canker removal in Austin TX
March 26, 2012 - I have several oaks that appear to have been killed by Hypoxylon atropunctatum from last summer's drought. Is it safe to cut them down in March or does that risk spreading Oak Wilt too. Should I ...
view the full question and answer

Problems with dogwood tree in Jacksonville FL
February 28, 2010 - Sir, I believe I have a Cornus drummondii, a stiff dogwood tree on my lawn which a few years ago was big, lush and full of branches and leaves. In the last 2 years I have noticed about 80% of it drop...
view the full question and answer

Smarty Plants on arborvitaes
March 28, 2005 - Hello, I live in Allentown, PA and have a 7-foot arborvitae shrub in my backyard, planted in the corner of the yard where a wood fence intersects with the brick wall of the garage. I have had ma...
view the full question and answer

Red buckeye not blooming in NY
July 04, 2011 - I planted my red buckeye in September 2007 and it was about 18 inches tall. It is now a few inches short of 5ft. tall. I have had it in the ground for nearly 4 yrs and it has never bloomed. I have fr...
view the full question and answer

Fasciation in Houston.
March 29, 2008 - I live in Houston and have had a rather large flower garden for many years. Most of the flowers are just gorgeous but over the last two or three years I have noticed that occasionally some of the flo...
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