Black walnut, black locust, wild cherry, horse chestnut, and red maple are trees horses should avoid. Oaks are moderately toxic to horses. Fortunately, trees with harmful toxins are designed to prevent animals from browsing and have a bitter taste that animals learn to avoid. Well-fed, healthy horses that have access to adequate forage, through pasture and/or hay, rarely consume toxic plants. All tree/wood chewing behavior is undesirable, not just from the toxicity standpoint but also from the perspective of protecting the horse's teeth. Try to develop management practices that decrease the desire, and provide adequate forage or restrict access, especially in areas of high stocking rates and limited forage cover.

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