Native Plants
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.
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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.
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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 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.
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