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

Lantanas failing to bloom, turning brown
October 06, 2007 - The lantana in my front yard does not bloom, is not overwatered but does get watered, leaves turned brown and plants generally have not grown. The lantana in the rest of the yard are in bloom and lo...
view the full question and answer

Problems with blueberries from Kernersville NC
April 29, 2012 - My blueberry plants have no leaves or scrawny ones. I have 13 plants, 5 of them are like this.
view the full question and answer

Transplant shock in Vacccinum corymbosum (highbush blueberry)
June 28, 2007 - Blueberry plants - We planted Northland and Blue Crop, 2 of each. All 4 plants have some leaves that are turning brown. This starts at the tip of the leaf, eventually encompasses the entire leaf, a...
view the full question and answer

Death of mature Eve's necklace in Fredericksburg, TX
July 12, 2010 - A friend mentioned his mature Eve's necklace had died this year. The next day I walked past my own mature Eve's necklace(about 5 years old)and it was dead! What could have happened? Thanks.
view the full question and answer

Leafing out problems with oaks in Towson MD
June 02, 2012 - 3 native 5-year-old oaks kept old leaves until March and are not leafing by the end of May. The few leaves that have emerged are shriveled. WHAT'S WRONG?
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