Native Plants
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Ask Mr. Smarty Plants
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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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