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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: Pinus ponderosa

Common Name: Ponderosa Pine

Species Most Often Affected: cattle

Poisonous Parts: needles, young shoots

Primary Poisons: unknown

Questions possibly pertaining to Pinus ponderosa:

Could tannins toxify salmoni fisheries?

Could pine needles poison my goat?

Are pine trees harmful to horses?

Can you send me a list of plants toxic to sheep?

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