Black Pine Toxic?

Updated 2026-03-06| 2 min read| 2,147 found this helpful
Pinus nigra J.F.Arnold
1

Toxic parts include bark, needles, and sprouts, containing harmful terpene and diterpene compounds.

2

Poisoning symptoms appear after a 2-3 day latency period, and can progress to paralysis, organ damage, or fatal respiratory failure.

3

Only fully dried Pinus species foliage is safe for livestock feed, and pregnant ruminants face high abortion risk if exposed to related toxic pines.

FAQ

Is Black Pine toxic to Humans?

No specific human poisoning data documented; potential symptoms include oral irritation, gastrointestinal upset, dizziness, and lethargy if large amounts are ingested. (Low)

Is Black Pine toxic to Cats?

No species-specific toxicity data available; monitor for drooling, vomiting, loss of appetite, or lethargy if ingestion is observed, and contact a vet promptly. (Low)

Is Black Pine toxic to Dogs?

No species-specific toxicity data available; monitor for drooling, vomiting, abdominal pain, or lethargy if ingestion is observed, and contact a vet promptly. (Low)

Is Black Pine toxic to Horses?

No species-specific toxicity data available; monitor for excessive salivation, gastrointestinal distress, limb weakness, or depression if ingestion is observed, and contact a vet promptly. (Low)

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Toxicity Details

Humans
Low

No specific human poisoning data documented; potential symptoms include oral irritation, gastrointestinal upset, dizziness, and lethargy if large amounts are ingested.

Cats
Low

No species-specific toxicity data available; monitor for drooling, vomiting, loss of appetite, or lethargy if ingestion is observed, and contact a vet promptly.

Dogs
Low

No species-specific toxicity data available; monitor for drooling, vomiting, abdominal pain, or lethargy if ingestion is observed, and contact a vet promptly.

Horses
Low

No species-specific toxicity data available; monitor for excessive salivation, gastrointestinal distress, limb weakness, or depression if ingestion is observed, and contact a vet promptly.

Toxicity Snapshot

Toxic PartsBark, needles, sprouts
Exposure RouteIngestion (primary exposure route), skin contact with resin may cause mild localized irritation in sensitive individuals
Toxic CompoundsEssential oil (turpentine oil); α-pinene; caren; β-pinene; limonene; norcamphene; borneol; abietic acid; isocupressic acid; other diterpenes

First Aid & Prevention

First 30 Minutes

  • • Remove all remaining plant material from the mouth, skin, or surrounding area of the exposed individual/animal to prevent further exposure.
  • • Do not induce vomiting unless explicitly instructed to do so by a licensed veterinarian or medical professional.
  • • Document the time of exposure and approximate amount of plant material ingested to share with medical providers.

Contact Vet Immediately

  • • Any confirmed or suspected ingestion of black pine parts by pets, livestock, or young children.
  • • Appearance of poisoning symptoms including excessive salivation, loss of appetite, lethargy, limb weakness, or difficulty breathing.
  • • Exposure in pregnant ruminants, due to high associated abortion risk from related Pinus species.

Prevention

  • • Only feed fully dried Pinus species foliage to livestock, never fresh plant material, to reduce toxicity risk.
  • • Keep ornamental black pine plants out of reach of pets and small children to avoid accidental ingestion.
  • • Avoid grazing pregnant ruminants in areas with dense growth of toxic Pinus species to prevent abortion and poisoning.

Treatment & Prognosis

  • • Administer gastrointestinal decontamination measures such as activated charcoal as appropriate for the timing of exposure.
  • • Provide symptomatic supportive care including fluid therapy, electrolyte correction, and management of kidney, liver, or gastrointestinal injury.
  • • Monitor respiratory function closely in severe cases, as poisoning can lead to fatal respiratory paralysis requiring advanced supportive care.
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Professional Toxicology

Scientific NamePinus nigra J.F.Arnold
AliasesPinus nigricans Host、Austrian pine、Schwarz-Kiefer、Pin noir、Pino nero
Toxicity Grade
HumansLow
CatsLow
DogsLow
HorsesLow
Target Organs
Gastrointestinal tractKidneysLiverNervous systemRespiratory systemReproductive system (pregnant ruminants)
Mechanism of Action

• Monoterpene compounds in the plant irritate mucosal membranes, triggering hypersalivation and gastrointestinal distress.

• Diterpene compounds (abietic acid, isocupressic acid) exert nephrotoxic and neurotoxic effects on exposed organisms.

• Severe poisoning disrupts central nervous system function, leading to paralysis and fatal respiratory failure.

• Isocupressic acid in closely related pine species causes abortion in pregnant ruminants exposed after the 116th day of gestation.

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Ingestion of toxic Pinus species needles after the 116th day of pregnancy is linked to high abortion risk; non-pregnant individuals may develop rumen atony, kidney damage, paralysis, and fatal respiratory paralysis.
American Bison (Bison bison): Exposure to dried Ponderosa pine needles carries the same abortion risk as seen in cattle, alongside general poisoning symptoms.
General ruminants: Poisoning symptoms include 2-3 day latency period followed by salivation, gastroenteritis, anorexia, and subsequent hind leg paralysis, organ damage, and death in severe cases.
Confusion Risk

The following plants look similar and may be confused:

Ponderosa Pine Pinus ponderosa
Visually similar to black pine with comparable needle morphology; Ponderosa pine has significantly higher isocupressic acid content, leading to confirmed high abortion risk in pregnant ruminants, and can be distinguished by its yellow-green needles and orange-brown upper bark.
Scots Pine Pinus sylvestris
Shares similar evergreen needle and bark traits with black pine; Scots pine has higher abietic acid concentrations in its twigs and resin, carrying higher nephrotoxic and neurotoxic risk, and is distinguished by its shorter, blue-green needles and flaky orange upper bark.
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Data Sources

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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