En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - What caused bump after walk in woods from Ontario

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

Monday - July 25, 2011

From: Kitchener, ON
Region: Canada
Topic: Poisonous Plants
Title: What caused bump after walk in woods from Ontario
Answered by: Barbara Medford

QUESTION:

I recently went for a walk in the woods near a stream. When I got to the river my leg had a little bump. It wasn't itching. I got home, it swelled even bigger. Can you tell me what plant I bumped into? Thank you

ANSWER:

Here is a list of the Poisonous Trees and Shrubs of Ontario. All three listed are native to Ontario:

Menispermum canadense (Common moonseed) - only berries are toxic if eaten. Pictures.

Toxicodendron vernix (Poison sumac) - all parts poisonous. Pictures 

Toxicodendron radicans (Eastern poison ivy) - all parts poisonous. Pictures

Our personal opinion is that you probably were stung  by some insect. Being in the woods near a stream, the best guess is a mosquito, but you could also have brushed against a plant with a spider or ants on it that didn't take well to your intrusion.

Our advice: if it has swollen more, spread to a rash, or you are having allergic reactions, see a doctor.

 

 

 

 

More Poisonous Plants Questions

Different colors of Argemone spp. from McAllen TX
March 16, 2014 - I took pictures of at least 5 colors of pricklepoppy today. Is this common to have so many colors in one area? How do I harvest the seedpods and when is the best time to do so?
view the full question and answer

Poisonous thorn in Marion NC
May 16, 2010 - Yesterday my son got a thorn stuck in his foot. I removed it but his foot is still swollen and puffy today. What kind of plants have poisonous thorns?
view the full question and answer

Vines for fence, safe for horses in California
December 12, 2013 - I live in a fire prone part of Orange County, CA named Silverado and own horses. Am interested in fast growing vines to cover a fenced area which are horse safe. Thank you.
view the full question and answer

Pet-friendly plants for ground cover in Bastrop TX
June 21, 2010 - Any pet-friendly plants that can be used for ground-cover in Central Texas?
view the full question and answer

Plant ID of unknown purchased plant from Boise ID
June 24, 2012 - Hi! I bought a tree that the sales person didnt know what it was. I thought it was a cherry tree and now after about 3-4 yrs I know it is but..How do I know if it is an ornamental tree or real fruit t...
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