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PLEASE NOTE:
"Poisonous" does not mean deadly. Some manifestations of toxicity are subtle. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard.

Frequently (and not so frequently) Asked Questions

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BRIEF: Can crown vetch be harmful to horses?


QUESTION:
I have planted crown vetch on a hill next to a horse pasture, it is spreading rapidly. Do I need to worry about it getting into the fenced area where the horses are?

ANSWER:
While crown vetch doesn't do much to cows, it can poison horses if they eat a lot of it. If it comes into the pasture, mow that bit to keep it in check and chances are between that and a little subclinical grazing by the horses and it will not gain much of a foothold.