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

Sunday - April 18, 2010

From: Burleson, TX
Region: Southwest
Topic: Pests, Cacti and Succulents
Title: Yucca with halticotoma valida bugs in Burleson TX
Answered by: Barbara Medford

QUESTION:

I have had Yucca plants in my yard for 10 years, but this year is the first time I have seen halticotoma valda, and there are thousands of them. How do I get rid of them? are they harmful to the plant. Thank you

ANSWER:

Most websites on yuccas would have you believe they are subject to no serious pests or diseases, but there are some. The yucca is a pretty tough plant, used to surviving in difficult environments, but these bugs are not attractive and you certainly don't want them to continue to multiply. Of the suggestions in the website referenced below, we would certainly go for the insecticidal soap first, which would have the least impact on the environment. A good hard freeze supposedly will deter them, as well, but we've probably had the hardest freezes in Texas that we will have for a long time, so if they are still with you, we would take a shot at getting rid of the little beasties. 

From a previous answer by Mr. Smarty Plants:

Here is a Connecticut Agricultural Experiment Station website on the Plant Health Problems of Yucca . The Lady Bird Johnson Wildflower Center neither recommends for nor against pesticides, but these sites have suggestions for the specific bugs in question. Always read directions carefully and follow them to the letter when applying pesticides. 

Pictures from BugGuide

 

 

More Cacti and Succulents Questions

Will the blooming stalk of my century plant eventually tip over? Yes
June 24, 2009 - I have a century plant in bloom. Will the stalk eventually tip over? Would appreciate any Internet references on the subject.
view the full question and answer

Bugs on yucca plant in New Jersey
August 06, 2008 - I noticed small bugs ALL OVER 4 established yucca plants all near each other. They may look like Halticotoma valida but I'm not positive. There is no brown on the leaves except for the large amount...
view the full question and answer

Century plant dying after bloom
April 06, 2006 - Help!! I want to save my Century Plant from dying. I have already lost one and I don't want to lose this one. Can cutting the stalk before it gets too big save this beautiful plant? Please, pleas...
view the full question and answer

What to do about cold damage to spineless prickly pear?
March 05, 2010 - In Austin, Texas our 'spineless' prickly pear cactus is about 6' wide by 4' tall. In the last severe freeze, the top half flattened out and has remained that way. Should I cut the flattened pads o...
view the full question and answer

New agave plants, offshoots of parent plant, transplanting
September 16, 2007 - I have different varieties of Agaves that are sending off new plants from the mother. Some have 1-2 and some have 6-7 plants. Is there a proper method for removing (cutting them a certain way) for t...
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