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 - May 16, 2010

From: Denver, CO
Region: Rocky Mountain
Topic: Poisonous Plants
Title: Is arborvitate (Thuja sp.) safe for horses
Answered by: Nan Hampton

QUESTION:

Is arborvitae poisonous to horses? I want to plant it along the horse pasture. If it is poisonous, what are similar plants that are not poisonous to horses?

ANSWER:

Neither Thuja plicata (western arborvitae) nor Thuja occidentalis (eastern arborvitae) appear in any of the toxic plant databases listed below:

ASPCA Toxic and Non-Toxic Plant Lists—Horses

Poisonous Plants of North Carolina

Cornell University Plants Poisonous to Livestock

Toxic Plants of Texas 

University of Pennsylvania Poisonous Plants

Canadian Poisonous Plants Information System

This is a pretty good indication that it would be safe to plant in your horse pasture.

 

 

More Poisonous Plants Questions

Non-native vines poisonous to animals from Park Ridge IL
June 18, 2012 - I have a Star Jasmine and sambac Philipine Jasmine Plant . Are they poisonous to cats or dogs. I have them in the house.
view the full question and answer

Pool-Side Plants for Miami
April 02, 2015 - I am looking for plants, along the line of ti plant cordyline features, to plant around my chlorinated pool area with full South Miami sun. We have a dog therefore they must be non-toxic plants. The...
view the full question and answer

Is the Texas buckeye as poisonous as the Ohio buckeye from Carrollton TX
April 10, 2011 - Is the Texas buckeye as poisonous as Ohio Buckeye?
view the full question and answer

Plant identification from Peoria IL
July 10, 2009 - I removed a plant from our workplace that employees were afraid was hallucinogenic seeds. Central Illinois. Very purple stem. Purple flowers. Black seeds. Any ideas?
view the full question and answer

Poison ivy? vine in NJ
July 30, 2012 - I have a vine growing among some vegetation in my backyard. It has a leaf with 3 "points" with ridges along its edges. The smaller leaves are reddish which is why I thought poison ivy but definite...
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