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"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.

Scientific Name: Festuca arundinacea

Common Name: Tall Fescue

Species Most Often Affected: cattle, horses

Poisonous Parts: all

Primary Poisons: diaziphenanthrene, pyrrolizidine, and ergot

Link to web page(s): fescue.html

Questions possibly pertaining to Festuca arundinacea:

Why are alfalfa and Tall fescue on the list of poisonous plants?

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