Trees That Are Toxic to Horses. For smaller trees that are safe around horses, plant a Western redbud (Cercis orbiculata) or California ash (Fraxinus dipetala). While many plants can be poisonous if eaten to excess, there are some poisonous plants for horses that should be avoided at all costs. Field Maple, Hornbeam, Hazel, Hawthorn, Beech, Bay laurel, Ramanas rose, Rosemary. Check with the University Extension Service to ask them, or maybe a call to a nursery/landscaping business would yield an answer for you. I've got two ash trees in my field and my horses go mad for the leaves. Some tree and shrubs species are toxic to horses and should be avoided around and within horse pastures/paddock. Many plants are poisonous to equines; the species vary depending on location, climate, and grazing conditions.In many cases, entire genera are poisonous to equines and include many species spread over several continents. Horse Friendly Trees. Unfortunately, there are many large shade trees that are harmful to livestock like horses, cattle, sheep, goats and swine. texensis (Texas redbud) Study the photos closely. In the … The following plants can produce good hedges in their own right or as creative mixtures for non-toxic hedges and trees safe for horse enclosures. Choose plants for your horse’s safety: There are several species that are poisonous to horses such as yew, laurel and privet. ... ve also been told Desert Ash is a good one to plant as a shade tree as it’s not toxic to horses. We also recommend the following trees as they provide good shelter and shade for horses. I don't know about the Ash although I had many Ash trees around me in VT and they weren't toxic to horses, BUT if it is an ornamental, it may hold different hazards as many ornamentals tend to do. The decision behind choosing the right trees for horse paddocks and enclosures is more than just selecting something that is big and wide for shade. Here are a few recommendations for native trees and shrubs for north central Texas that are not toxic for horses: Carya illinoinensis (pecan) Cercis canadensis var. Plants have co-evolved with and are eaten by bacteria, insects, fungi and grazing animals. Print Download Email Share Tweet Reply. No, willow tress (like the one shown above) are not toxic to horses. They have more than enough grass to eat so they are not hungry. Guidelines for Shade Trees in a Pasture for Horses Shade Trees Recommended: Ash - grow fast; nice fall color White Ash- purple leaves in fall Green Ash- yellow leaves in fall Shade Trees that may be OK, but have some/low risk of toxicity : Sugar Maple- no known reports of toxicity; but may be some risk since Red Maple is toxic Here are the most common ones. Then take a walk around your property. Silver birch, Aspen, White willow and Common lime. Hardy in USDA zones 7 … I'm worried that they may be poisonous but addictive like oak trees. 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