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

Yuccas and prickly pears for Warren MI
February 11, 2009 - What type of yuccas and prickly pears will survive in the Detroit, Michigan area? Also, can I grow Santa Rita prickly pear in a pot?
view the full question and answer

Soaptree yucca falling over in Mesa AZ
July 24, 2013 - My soaptree yucca is about 5 ft tall and has fallen over. Does this plant require staking for I thought not, or is something else going on with it?
view the full question and answer

Preserving century plant bloom stalk from Sedona AZ
December 16, 2012 - I have the flower stalk from a century plant which I am using as a Christmas tree. Can you advise me as to what I should do to preserve it for future use? Should it be kept indoors or outdoors. Pro...
view the full question and answer

Cleaning up Adams Needle yucca in Vancouver Island BC
May 19, 2009 - We have Adam's needle yucca's in our the flower bed of our newly purchased home here on Vancouver Island BC. They thrive and produce impressive flowers. How do I clean them up in the spring time ...
view the full question and answer

Non-native hylocereus undatus for Austin
February 24, 2012 - Can we plant Hylocereus (Dragon Fruit) here in Austin, TX? We are going to have a large xeriscape bed and want to know what all we can put in it. We are new to Texas so we have no clue what grows here...
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