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 Pests Questions

Changing colors on Mexican Plum trees from Bellaire TX
June 20, 2013 - The leaves on my Mexican Plum tree have recently started turning yellow/brown and the veins in leaves are red. Is this a watering issue or disease issue? Mites are on the leaves. This has been a ra...
view the full question and answer

Chigger Control in Habiturf from Plano, TX
April 08, 2015 - We converted our back yard in Plano, Texas to Habiturf last spring/summer and have a nice lawn; however, for the first time since we have lived in this house for 32 years, the lawn was full of chigger...
view the full question and answer

Tree with brown spots on leaves containing caterpillars
July 14, 2011 - We have a new little tree we planted in our yard and I went over to admire it and on each leaf there is a brown spot in which little worms are living. They are alive and moving around in the pocket th...
view the full question and answer

Wasps on live oaks from Sinton TX
August 20, 2012 - Wasps on my live oak trees. What is attracting them? Does this hurt the tree?
view the full question and answer

Failure to thrive of pecan trees in Las Vegas NV
October 11, 2009 - In April this year I purchased two 8-foot tall pecan trees in 3-foot square boxes from a local nursery and planted them here in Southern Nevada. I'm sure I dug a large enough hole to provide plenty ...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center