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

Groundcover for shade in Duval County, Florida
September 17, 2014 - What low growing ground cover would be good for a lake edge area. This area is shaded with overlying woodland type trees. I planted some autumn ferns but they have getting overrun with poison ivy. I a...
view the full question and answer

Is the Magnolia 'Ann' safe for horses
May 14, 2010 - I bought a magnolia "ann". Will it hurt my horses to eat any part of it?
view the full question and answer

Removing Mountain Laurel Seed Pods from Austin
August 14, 2012 - Is it best to remove seed pods from Mt. Laurel or leave them on the tree?
view the full question and answer

Plants referred to as Hummingbird plants
August 22, 2008 - We have a a plant that is sometimes called a Hummingbird Plant, sometimes a Firecracker plant. I have also seen the name lonicera sempervirens. Are they poisonous? This is a plant, not a vine. T...
view the full question and answer

Is Savannah Holly poisonous to burn in Hanahan, SC.?
August 20, 2011 - Can you please tell me if the wood from a savannah holly bush is poisonous to burn?
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