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
3 ratings

Saturday - July 30, 2011

From: Huntersville, NC
Region: Southeast
Topic: Poisonous Plants, Vines
Title: Getting rid of poison ivy, poison oak and poison sumac
Answered by: Nan Hampton

QUESTION:

How can I rid my yard of poison ivy, poison oak and poison sumac? I have tried roundup, poison ivy roundup and even a clorox solution and nothing seems to kill it, I keep seeing it come up. Any help would be greatly appreciated! Thank you

ANSWER:

Vigilance and persistence are the keys.  If you can dig or pull up the roots of the plants, you are going to be able to get rid of the plants more quickly.   That will take a great deal of effort and you might not be able or willing to do this.  If you can't or don't want to make the effort to try and dig up roots, your best strategy is the following: 

  • Every time you see a new poison ivy, poison oak or poison sumac plant emerge in your yard, cut it off near the ground and IMMEDIATELY (using a small paintbrush--the small foam ones work well) paint the cut with the poison ivy Roundup or equivalent.  (Clorox is not likely to be particulary effective.)   You need to paint it as soon as you cut it because, as a means of defense against disease or insect infestation, plant cells close off wounds quickly and the herbicide won't be transferred to the roots.
  • Wrap the cutoff portion in a plastic bag and dispose of it.
  • Keep careful watch for new plants and act when you see them.  It will take a while, but it will eventually rid your yard of the poisonous pests.

Remember to read and follow the safety precautions listed on the label of the herbicide.   Wear long sleeves, long pants, shoes, socks and gloves to keep from getting the poisonous oils on your skin.

Please check the answer to a previous question about eliminating poison ivy with more detailed instructions as well as methods to avoid.

 

From the Image Gallery


Eastern poison ivy
Toxicodendron radicans

Eastern poison ivy
Toxicodendron radicans

Eastern poison ivy
Toxicodendron radicans

More Poisonous Plants Questions

Is non-native Ixora poisonous to horses?
June 26, 2013 - My horse was eating an ixora bush at a park in south florida. Is the Ixora shrub poisonous to horses?
view the full question and answer

Cenizo safe for consumption by parrots from Phoenix AZ
April 30, 2012 - Could you tell me if Cenizo, (Leucophyllum frutescens) branches and leaves can be fed to pets? (parrots)I read the leaves were often used for tea for humans, but can't find an information if safe fo...
view the full question and answer

Are seeds of trumpet vine poisonous from Creston BC
September 12, 2013 - Are the seeds in the trumpet vines pods poisonous to humans or can I use them as dried beans? I have one plant that covers most of my house's south wall. It is a very established plant.
view the full question and answer

Horse-friendly plants for Powell OH
September 24, 2010 - I am looking for horse friendly plants, i.e., shrubs, trees, bushes, etc. that can be planted in wet area in Ohio. Thank you in advance for your assistance.
view the full question and answer

Is Clethra alnifolia toxic to dogs?
June 01, 2013 - Is Clethra alnifolia toxic to dogs?
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