Dianthus caryophyllus
Caryophyllaceae
Carnation; Pinks; Pink; Wild Carnation; Clove Pink; Grenadin Pink; Sweet William; Dianthus; Dianthus caryophyllus; Gina Porto; Helen; Laced Romeo; Red Rocket
Unknown irritant compounds; possible triterpenoid saponins or other mild gastrointestinal and skin irritants. Dianthus is not generally considered part of the more dangerous gypsogenin-containing Caryophyllaceae group.
Mild gastrointestinal upset, vomiting, diarrhea, drooling, abdominal discomfort, reduced appetite, mild lethargy, and possible skin irritation, itching, redness, rash, or contact dermatitis in sensitive animals after exposure to the sap or plant material. Serious poisoning is not expected in ordinary pet exposures, but persistent vomiting, diarrhea, dehydration, or swelling should be treated more cautiously.
Dianthus is a genus of approximately 300 species of flowering plants in the family Caryophyllaceae. The genus is believed to be native to Europe and Asia, although its exact original range is difficult to define because these plants have been extensively cultivated for at least the last 2,000 years. Indigenous species can also be found extending south from Europe into Northern Africa, and one species, Dianthus repens, can even be found in arctic North America.
Common names within the genus include Sweet William, Dianthus barbatus; Pinks, including Dianthus plumarius and related species; and Carnation, Dianthus caryophyllus. Because these names are often used interchangeably in gardens, florist arrangements, seed catalogs, and older plant references, a pet owner may encounter the same general plant group under several different names, including Carnation, Pinks, Wild Carnation, Clove Pink, Grenadin Pink, and Sweet William.
In general, the genus consists mostly of herbaceous perennials, although a few species are annual or biennial, and some are low subshrubs with woody basal stems. The leaves are opposite, simple, mostly linear, and often bluish-gray or green. The flowers, typically with a frilled, toothed, or “pinked” margin, will almost always have five petals and are, in nearly all species, pale to dark pink. One species, Dianthus knappii, has yellow flowers with a purple center.
Flowering typically occurs from July to August, and the seeds ripen from August to September. Some species, particularly the perennial pinks, are noted for their strong spicy fragrance. In holistic and folk medicine, members of this genus have been noted for antispasmodic, cardiotonic, diaphoretic, fever-reducing, nerve-soothing, and stimulant properties. As with many plants that have a long medicinal or ornamental history, that history should be understood as evidence that the plant contains biologically active compounds, not as proof that it is harmless when chewed by pets.
Within the Caryophyllaceae, four genera contain steroidal saponins that are glycosides of pentacyclic oleananes. As a result, those genera have been known to cause potentially serious intoxication problems in animals. Gypsogenin, also called githagenin, is the toxin typical of the more concerning group within the family. Dianthus, however, has not been shown to contain gypsogenin and is not considered to be part of that toxic four.
Some members of the genus do contain unknown irritant compounds and possible triterpenoid saponins that may be mildly toxic if animals ingest a sufficient quantity. Current plant-toxicology references generally describe Carnation and related Dianthus plants as low-severity exposures, with the expected signs being mild gastrointestinal upset and mild dermatitis. This fits the practical pattern seen in pets: vomiting, diarrhea, drooling, reduced appetite, and mild skin or mouth irritation are possible, but severe poisoning is not expected from ordinary nibbling.
Additionally, the sap of some species has shown the ability to cause contact dermatitis in certain individuals. This means that a pet does not necessarily have to swallow a large amount of the plant to show mild signs. Chewing stems, rubbing against cut flowers, contacting sap, or repeatedly mouthing the plant may produce redness, itching, rash, or irritation in sensitive animals.
As a result, ingestion of these plants by a pet should be considered unhealthy and perhaps mildly toxic, but generally not life-threatening. Carnations are common in florist arrangements, bouquets, wedding displays, Valentine’s Day arrangements, funeral flowers, and garden beds, which makes exposure common even though serious intoxication is uncommon. The main practical concern is preventing chewing, removing plant material from the mouth, controlling vomiting or diarrhea if it occurs, and watching sensitive animals for skin or oral irritation.
Immediate Response to Carnation Ingestion or Contact
- Remove the Source: Prevent further ingestion by removing the Carnation, bouquet, floral arrangement, garden plant, stems, leaves, petals, cuttings, or any remaining plant material from the pet’s reach.
- Remove Plant Material from the Mouth: If ingestion was recent and it is safe to do so, remove visible plant matter from the mouth.
- Rinse and Flush the Mouth: Rinse and flush the mouth thoroughly with water to remove uneaten plant material, sap, and any irritating residue.
- Wash Contact Areas: If sap or plant material contacted the skin, lips, nose, paws, gums, or other sensitive areas, gently wash the exposed area with water and mild pet-safe soap if appropriate.
- Watch for Mild Signs: Monitor for vomiting, diarrhea, drooling, reduced appetite, abdominal discomfort, mild lethargy, itching, redness, rash, or skin irritation.
- Contact Veterinary Help if Symptoms Persist: Consult a veterinarian, emergency veterinary clinic, Pet Poison Helpline, or another animal poison-control professional if symptoms are persistent, repeated, severe, or if the pet is a cat, puppy, kitten, elderly animal, very small animal, or medically fragile.
Inducing Vomiting and Decontamination
- Getting Plant Material Out Matters: If a dog has recently swallowed Carnation or other Dianthus plant material, removing remaining plant material from the stomach may reduce continued gastrointestinal irritation. In appropriate dog exposures, vomiting may be one of the least disruptive ways to remove recently ingested plant material before it continues irritating the stomach and intestines.
- Inducing Vomiting in Dogs Only: If ingestion was recent and the dog is alert, breathing normally, able to swallow, and not showing weakness, collapse, repeated vomiting, severe depression, breathing difficulty, severe mouth or throat swelling, or neurologic signs, a veterinarian or animal poison-control professional may recommend inducing vomiting with fresh 3% hydrogen peroxide.
- Cat Warning: Hydrogen peroxide should not be used to induce vomiting in cats unless a veterinarian specifically directs it. Cats are more prone to irritation and complications from hydrogen peroxide, and home vomiting attempts may create more risk than benefit.
- Do Not Induce Vomiting in an Unstable Animal: Vomiting should not be attempted in any animal that is weak, collapsed, sedated, having trouble breathing, unable to swallow normally, already vomiting repeatedly, showing severe oral swelling, or otherwise unstable.
- Rinse Again After Vomiting: If the pet vomits, rinse the mouth again with water to remove potentially irritating vomitus and any remaining plant residue.
- Activated Charcoal or Lavage: While not practical in a home or field setting, gastric lavage and activated charcoal may be considered by a veterinarian in unusually large or persistent cases, although most Carnation exposures are mild and do not require aggressive decontamination.
Symptomatic Care and Treatment
- Hydration: Ensure the pet receives adequate fluids to reduce the risk of dehydration caused by vomiting, diarrhea, drooling, or reduced willingness to drink.
- Monitor for Dehydration: Pets experiencing persistent vomiting or diarrhea should be watched carefully for signs of dehydration, including weakness, dry gums, sunken eyes, lethargy, or reduced urination.
- Oral or Skin Irritation: If there is obvious oral swelling, skin irritation, itching, redness, or suspected allergic-type reaction, veterinary guidance is recommended. An antihistamine such as diphenhydramine may be considered under veterinary direction to help reduce swelling, discomfort, and inflammation.
- Airway Swelling: If swelling affects the mouth, tongue, throat, or airway, the pet should be evaluated by a veterinarian immediately and kept under observation until swelling abates and breathing remains normal.
- Gastrointestinal Protection:
- Kapectolin: To alleviate gastrointestinal upset and diarrhea, Kapectolin may be given at a dose of 1 to 2 ml/kg four times daily to help coat and protect the stomach lining.
- Sucralfate: Sucralfate may be used for gastrointestinal irritation because it reacts with stomach acid to form a paste-like protective barrier between irritated tissue and stomach contents.
- Dogs greater than 60 lbs: 1g every 6 to 8 hours.
- Dogs less than 60 lbs: 0.5g every 6 to 8 hours.
- Cats: 0.25g every 8 to 12 hours.
Prognosis and Recovery
- General Outlook: Carnation ingestion is generally expected to be low-risk and is not usually associated with life-threatening poisoning.
- Expected Recovery: In the vast majority of cases, pets are expected to make a full recovery within 4 to 24 hours after ingestion, especially when symptoms are limited to mild vomiting, diarrhea, drooling, or temporary stomach upset.
- When to Seek Veterinary Care: Veterinary care is recommended if vomiting or diarrhea is persistent, if the pet cannot keep water down, if blood appears in vomit or stool, if the pet becomes weak or dehydrated, or if oral swelling interferes with eating, drinking, or breathing.
- Prevention: Keep bouquets, florist arrangements, cut stems, discarded petals, and garden plants away from pets that are prone to chewing flowers or greenery.