Toxic Plants to horses?

North Louisiana, want to landscape around horse breeding barn, but what can I plant that is not toxic to horses. Would like to plant crape myrtles and bradford pears down drive way, but have a 750' concrete trough that runs along the outside of paddocks that I want to plant flowers in. Also plant hedges along outside of barn. Any help would be greatly appreciated.

Answers:
...www.horsenetwork.com/refere... - 4k - Cached -
YEW IS DEADLY.....SO ARE LOTS OF OTHERS IN DIFFERENT DEGREES OF TOXICITY......THEY WILL TRIM ANY TREES NEAR ENOUGH TO STRETCH THEIR NECKS TO.....CASTOR BEAN IS DEADLY AND YEW ....AND MAKE THE PLANTER S FAR OUT FROM THE PADDOCK FENCING LIKE PUT RR TIES TWO SIDE BY SIDE THEN PLANT....
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