En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Want to identify caterpillar that is stripping prickly ash in Flatonia, Tx.

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

Tuesday - April 05, 2011

From: Flatonia, TX
Region: Southwest
Topic: Trees
Title: Want to identify caterpillar that is stripping prickly ash in Flatonia, Tx.
Answered by: Jimmy Mills

QUESTION:

What is the 5/16ths long 1/8th inch long pale opaque green caterpillar that strips prickly ash? It has tiny black dots down its spine and along each side. It has stripped two large trees? Will the prickly ash leaf out again?

ANSWER:

Mr. Smarty Plants isn't very familiar with caterpillars, but from your measurements I'd say that it is too short to be an inch worm.

But lets get to the plant part of the question and see where that leads. The common name Prickly Ash is applied to at least three plants found in Texas: Aralia spinosa (Devil's walkingstick), Zanthoxylum hirsutum (Texas hercules' club), and Zanthoxylum fagara (Lime prickly ash). I don't know which one you have, but Z. hirsutum is a larval host for the Giant Swallowtail butterfly Papillio cresphontes. Check to see if the images match the caterpillar that is chomping on your tree. (more info and images)

Zanthoxylum fagara is the larval host of Eantis tamenund the Sickle Wing Skipper. The caterpillar is light green, but it lacks the dots that you mentioned. 

So we have two possible suspects, but no positive ID. You might want to contact the folks at the Fayette County Office of Texas AgriLife Extension for some help closer to home.

The caterpillars should pupate before too long which will halt the onslaught on the tree. Will the tree leaf out again? This depends on the extent of the damage. One word of caution however; when people see a tree in distress, the tendency is to give it lots of water. Please refrain from doing this. The leaves on a tree help to move water from the roots up to the stems. When the leaves are missing, there is a possibility of the roots becoming waterloged through overwatering.

 

 

More Trees Questions

Small flowering tree for cemetery in TX
November 07, 2010 - I am looking for a native large shrub or small tree to plant at a cemetery in Pflugerville, TX, preferable something with flowers. I need something that won't have a large root system that would dis...
view the full question and answer

protecting native trees during drought
June 07, 2011 - We are very concerned about our mature live oaks and cedar elms because they are so stressed due to the drought. We have lost several of our mountain juniper and I really don't want to lose our more...
view the full question and answer

Revegetating a hillside in western Washington state
October 10, 2012 - Removing several downed trees across my dock demolished the native plants growing on the hillside and the contractor pulled out their remains. The area faces east on an open freshwater bay. Close to...
view the full question and answer

Trees suited for rocky, caliche soil of Central Texas
September 20, 2011 - I need to replace aging ashes. I have planted 2 Monterey oaks, but I would like to know what else I could plant whose roots will grow well in NW Austin caliche, rocky soil? Thank you.
view the full question and answer

Plants for shelter for butterflies
July 04, 2010 - I understand that butterflies need certain plants for food, but are there specific plants that butterflies prefer to use as shelter in central Texas?
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