En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Campsis radicans or cow itch

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
1 rating

Thursday - April 03, 2008

From: Jacksonville, NC
Region: Southeast
Topic: Poisonous Plants
Title: Campsis radicans or cow itch
Answered by: Barbara Medford

QUESTION:

We cleaned my father-in-law's home-place up out in the country week-before-last. My wife, her 2 sisters and a niece have this unusual-looking poison on them. It is big red places and itches all over their bodies. Some say it is "cow itch". What is cow itch and what does it look like?

ANSWER:

One of the common names for Campsis radicans (trumpet creeper) is cow itch vine. We found a website on trumpet creeper that mentioned the irritation caused by contact with this vine; however, it states that the irritation should only last for a few minutes. It is a native of North Carolina, and easily escapes cultivation and gets all over everywhere, so you could easily have come in contact with it during your cleanup operation. Unfortunately, we suspect what you actually encountered is Toxicodendron radicans (eastern poison ivy). This plant is also native to North Carolina, and often found in shady, neglected areas. The rash from this for those sensitive to it (and nearly everyone is) is much more persistent, painful and hard to control. We don't have pictures for the two different rashes-a rash is a rash, showing up differently on different types of skin, etc. The members of your family that had the misfortune to come in contact with it should probably see a doctor. There are treatments for the rash, and it can be almost disabling until it goes away. You will note, when you read the webpage for this vine, that it can have many different appearances, and here is a page of images of the plant. We'll add a couple from our own Image Gallery. You can compare the leaves of the trumpet creeper with the leaves of the poison ivy, and see that, even when the trumpet creeper is not in bloom, there shouldn't be any confusion between the two plants. Remember the old saying, "Leaves of three, leave them be."


Campsis radicans

Toxicodendron radicans

Toxicodendron radicans

Toxicodendron radicans

 

 

More Poisonous Plants Questions

Failure to bloom of Eve's necklacepod in Austin
April 04, 2011 - I have a young Eve's necklace that never blooms in the spring. I wonder every spring if this will be the year, but the blooms never come. Is there a reason for this? The tree is about three or fou...
view the full question and answer

Are palm leaves poisonous?
August 25, 2009 - I live in a second story house surronded by various types of palm trees on the west coast of Florida. My 1 year old son crawls on the decks and tries to taste all of the palm leaves that sneak through...
view the full question and answer

Is Bignonia capreolata (crossvine) poisonous?
March 18, 2012 - I need to know whether any part of Crossvine (Bignonia capreolata) is poisonous. Am thinking of planting it at an Elder Day Center for people with memory problems and the director insists - no toxic ...
view the full question and answer

Are dogwood trees poisonous to horses?
April 26, 2009 - Are dogwood trees poisonous to horses?
view the full question and answer

White flowering mountain laurel from Driftwood TX
August 23, 2012 - I love white flowering mountain laurel (Sophora secundiflora) and want to grow one from seeds. I've had a lot of success germinating and growing purple mountain laurel from seeds (or beans), so I DO ...
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