En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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

Disappearance of leaves on desert willow in Tucson AZ
August 08, 2009 - We have a Lois Adams Desert Willow (Tucson, Az). The leaves will pump out and then a day or so later, all of the leaves are gone. The only bugs we've seen on it are very, very small ants. Could this ...
view the full question and answer

Problems with beheaded non-native Gerbera daisies in Cooperstown, NY
May 31, 2009 - I planted my gerberas in my perennial bed - as usual. Something is beheading them and leaving the blooms along side the plant. Some of the bloom is eaten but most of it is right there. I have t...
view the full question and answer

Small green balls falling from oaks in Hunt TX
May 03, 2014 - Our live oak trees have pin-sized black and green balls falling from them (there are so may that is sounds like rain!) The balls are not associated with or fall with the catkins. Thanks for your ass...
view the full question and answer

Need bug repelling plants in Arlington, VA
February 08, 2010 - What kind of plants are best bug repellents, and need little or no maintenance. I'm a city girl and don't like bugs (spiders)
view the full question and answer

Identity of small objects that look like tiny pecans
November 14, 2013 - Dear Mr. Smarty Plants, I am doing my science fair project on acorns. Last year I measured how many acorns and other nature-y stuff fell into a baby pool from a live oak tree in my backyard every ...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center