Common Flowers Toxic to Cats

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We have already covered plants which are toxic to cats, and flowers which are non-toxic to cats. In this article, we look at common flowers you may find in floral arrangements, potted flowers that are toxic to cats and common garden flowers which can be cut and brought inside.

Tulips: 

Tulips toxic to cats

Scientific name: Tulipa spp.

Toxic compound: Tulipalin A and B

Toxic parts: All parts, the bulb is the most toxic

Causes: Gastrointestinal disturbances

Symptoms: Dizziness, nausea, drooling, abdominal pain, loss of coordination, lethargy, and weakness

Daffodils and jonquils: 

Scientific name: Narcissus spp.

Toxic compound: Lycorine

Toxic parts: All parts, the bulb is the most toxic

Causes: Gastrointestinal disturbances and cardiac arrhythmias

Symptoms: Vomiting, drooling, diarrhea, seizures,  abdominal pain, tremors and cardiac arrhythmias. 

Amaryllis: 

Amaryllis (Belladonna Lily)

Scientific name: Amaryllis or Hippeastrum spp.

Other names: Belladonna Lily, Naked Lady, Resurrection Lily, Butterfly Amaryllis, St Joseph Lily

Toxic compound: Lycorine

Toxic parts: All parts, the bulb, and leaves are the most toxic

Causes: Gastrointestinal disturbances

Symptoms: Vomiting, drooling, diarrhea, abdominal pain, loss of appetite and tremors.

Dahlia: 

Dahlia toxic to cats

Scientific name: Dahlia spp.

Toxic compound: Unknown

Toxic parts: Leaves and tubers

Causes: Gastrointestinal disturbances and skin irritation

Symptoms: Vomiting, diarrhea, loss of appetite, skin irritation

Lilies: 

Lilies toxic to cats

Scientific name: Lilium and Hemerocallis

Other names: Rubrum Lily, Tiger Lily, Asiatic Lily, Day Lily, Stargazer Lily, and Easter Lily

Toxic compound: Unknown

Toxic parts: All parts of the plant are toxic to cats

Causes: Kidney failure

Symptoms: Vomiting, drooling, loss of appetite, lethargy, depression, increased urination followed by decreased/absent urination.

See more on lily poisoning here.

Calla lily: 

Scientific name: Zantedeschia aethiopica

Other names: Arum Lily, Calla Lily, Florist’s Calla, Pig Lily, White Arum, Trumpet Lily,  White Arum, Garden Calla

Toxic compound: Insoluble calcium oxalate crystals

Toxic parts: All parts, the roots are the most toxic

Causes: Gastrointestinal and oral irritation

Symptoms: Drooling, oral pain, difficulty swallowing, oral ulceration, vomiting, loss of appetite

Hyacinth: 

Hyacinth toxic to cats

Scientific name: Hyacinthus orientalis

Toxic compound: Calcium oxalate crystals and lycorine

Toxic parts: All parts, the bulb is the most toxic

Causes: Oral and gastrointestinal irritation

Symptoms: Vomiting, diarrhea (sometimes with blood), drooling and oral irritation

Chrysanthemum:

Chrysanthemum toxic to cats

Scientific name: Chrysanthemum spp.

Other names: Daisy and Mum

Toxic compound: Sesquiterpene lactones and pyrethrins

Toxic parts: All parts of the plant are toxic to cats

Causes: Gastrointestinal disturbances and skin irritation

Symptoms: Vomiting, diarrhea, drooling and incoordination and rash

Delphinium: 

Delphinium (Larkspur)

Scientific name: Delphinium spp.

Other names: Larkspur

Toxic compound: Diterpene alkaloids

Toxic parts: All parts of the plant are toxic to cats

Causes: Cardiotoxic and neuromuscular paralysis

Symptoms: Drooling, constipation, abdominal pain, paralysis, tremors, weakness, dilated pupils, abnormal heart rhythm and convulsions

Gardenia: 

Gardenia toxic to cats

Scientific name: Gardenia jasminoides

Other names: Cape Jasmine, Cape Jessamine, Danh-danh

Toxic compound: Genioposide and gardenoside

Toxic parts: All parts of the plant are toxic to cats

Causes: Gastrointestinal disturbances

Symptoms: Vomiting and diarrhea

Carnation: 

Scientific name: Dianthus caryophyllus

Other names: Clove pink

Toxic compound: Unknown

Toxic parts: All parts of the plant are toxic to cats

Causes: Mild gastrointestinal disturbances and skin irritation

Symptoms: Mild vomiting, diarrhea, loss of appetite and skin irritation (swelling and redness)

Anthurium

Anthurium toxic to cats

Scientific name: Anthurium scherzeranum

Common names: Pigtail plant, painter’s pallet, laceleaf, oilcloth flower, flamingo lily, and tail flower

Toxic compound: Insoluble calcium oxalate crystals

Toxic parts: All parts of the plant are toxic to cats

Causes: Mild gastrointestinal disturbances and skin irritation

Symptoms: Drooling, pawing at the mouth, oral swelling and pain, vomiting, loss of appetite

Peace lily: 

Scientific name: Spathiphyllum spp.

Toxic compound: Insoluble calcium oxalate crystals

Toxic parts: All parts of the plant are toxic to cats

Causes: Mild gastrointestinal disturbances and skin irritation

Symptoms: Drooling, pawing at the mouth, oral swelling, and pain, vomiting, loss of appetite

Gladiola: 

Gladiola toxic to cats

Scientific name: Gladiolus spp.

Toxic compound: Unknown

Toxic parts: All parts, the bulbs are the most toxic

Causes: Gastrointestinal disturbances

Symptoms: Vomiting, drooling, diarrhea, loss of appetite, lethargy

Hydrangea:

Scientific name: Hydrangea arborescens

Other names: Hortensia, Hills of Snow, Seven Bar

Toxic compound:  Cyanogenic glycoside

Toxic parts: Flowers and leaves

Causes: Gastrointestinal disturbances and skin irritation, large amounts can cause cyanosis

Symptoms: Vomiting, nausea, drooling, loss of appetite, skin irritation, difficulty breathing

Cyclamen: 

Scientific name: Cyclamen spp.

Other names: Sowbread

Toxic compound: Terpenoid saponins

Toxic parts: All parts, the tubers are the most toxic

Causes: Gastrointestinal disturbances and abnormal heart rhythm

Symptoms: Vomiting, drooling, diarrhea, loss of appetite, lethargy and abnormal heart rhythm

Bird of paradise: 

Bird of paradise toxic to cats

Scientific name: Strelitzia reginae

Other names: Crane Flower, Bird’s Tongue Flower

Toxic compound: Unknown

Toxic parts: All parts of the plant are toxic to cats

Causes: Gastrointestinal disturbances

Symptoms: Vomiting, nausea, drooling and loss of appetite

Poppy: 

Poppies

Scientific name: Papaver spp.

Toxic compound: Opium and morphine

Toxic parts: All parts of the plant are toxic to cats

Causes: Central nervous dysfunction

Symptoms: Sedation, wobbly gait (ataxia), loss of appetite, dilated pupils, decreased heart rate

Peony:

https://www.cat-world.com.au/images/peony.jpg

Scientific name: Paeonis officinalis

Toxic compound: Paeonol

Toxic parts: All parts of the plant are toxic to cats

Causes: Gastrointestinal disturbances

Symptoms: Vomiting and diarrhea

Poinsettia:

Poinsettia toxic to cats

Scientific name: Euphorbia pulcherrima

Toxic compound: Sap

Toxic parts: Sap

Causes: Irritation to the mouth and skin

Symptoms: Drooling, redness, swelling and occasionally vomiting

Iris

Iris toxic to cats

Scientific name: Iris spp.

Other names: Bearded iris, Douglas’s flag, snake lily, water flag, western blue flag, yellow flag, yellow water iris

Toxic compound: Pentacylic terpenoids (zeorin, missourin and missouriensin)

Toxic parts: All parts of the plant are toxic, the highest concentration is in the rhizomes (bulbs)

Causes: Gastrointestinal disturbances and skin irritation

Symptoms: Vomiting, drooling, diarrhea

Clematis:

Clematis toxic to cats

Scientific name: Clematis spp.

Other names: Virgin’s Bower, Leatherflower

Toxic compound: Irritant glycoside (Protoanemonin)

Toxic parts: All parts of the plant are toxic to cats

Causes: Skin irritation

Symptoms: Vomiting and drooling

Ornamental onion:

Ornamental onion toxic to cats

Scientific name: Allum spp.

Toxic compound: N-propyl disulfide and sodium n-propylthiosulfate

Toxic parts: All parts are toxic to cats but the highest concentration is in the bulb

Causes: Heinz body anemia

Symptoms: Vomiting, weakness, jaundice (yellow gums), blood in the urine, abdominal pain, elevated heart rate, lethargy, collapse

Foxglove:

Foxglove toxic to cats

Scientific name: Digitalis purpurea

Toxic compound: Cardiac glycosides (digoxin and digitoxin)

Toxic parts: All parts are toxic to cats

Causes: Heart abnormalities

Symptoms: Cardiac arrhythmias, decreased heart rate, drooling, vomiting, tremors, weakness, dilated pupils, collapse