Agave, Maguey, Bayonet, Agavaceae Toxic Principle: Sap from the leaves, Seeds, Calcium oxalate raphides, Acrid volatile oils, Mechanically injurious Clinical Signs: Oral mucosa irritation, Contact urticaria, Skin: Immediate burning, erythema, urticaria, and edema, Granuloma reaction from punctures by leaves
Almond Plants / Seeds / plant-pan allergen profilin can cause serious reaction in some birds: Generally all plants of the Prunus genus EXCEPT the pulp of the fruit contain amygdalin or related glycosides which are slowly hydrolyzed to hydrocyanic acid. Some allergic reactions to almond nuts have been observed.
Amaryllis: Clinical Signs: Can cause vomiting, diarrhea, depression, appetite loss, tremors, drooling and abdominal pain
Angel's Trumpet (some species), seeds, leaves
Apple Seeds (small quantities ok)
*Apricot (seeds, wood)
Asparagus Fern - Sprengeri Fern, Lace Fern - Toxic Principle: Non-toxic, Berries, Sapogenins, Foliage Clinical Signs: Dermatitis, Irritant, Cardiac, sedative, and diuretic effects
Autumn Crocus/Meadow - Saffron
*Avocado (any part of the plant -- including flesh, leaves, seeds, stem, skin)
Azaleas: Can cause weakness, upset stomach, drooling, heart failure, depression and possible coma
Beans: Broad, Castor, Glory, Fava, Horse, Mescal, Navy, Pregator, Scarlet Runner) - Large Beans: such as Anasazi, Black, Fava, Kidney, Lima, Navy, Pinto, and Soy - should never be fed raw. However, thoroughly cooked are safe and healthy.
Bird of Paradise
Black Locust (Robinia pseudoacacia)
*Castor Beans: Common Name: Castor Bean, Castor, Castor Oil Plant, palma Christi, Wonder Tree, Higuerilla, Steadfast Toxic Principle: Leaves, Seeds, Ricin, Ricinin Clinical Signs: Decrease blood pressure, Hypothermia, Decrease in blood glucose, Increase in serum hepatic enzymes: AST, ALT, LDH, Increase in BUN, calcium, phosphorous, Upset Stomach, Vomitting, Abdominal Pain, Nausea, Diarrhea, Anorexia, Trembling, Weakness, Sudden Collapse, Seizures, Exercise intolerance, Ataxia, Slight Depression, Copious thick, ropy salivation, Thirsty
Catnip Common Name: Catmint, Catnip Toxic Principle: Volatile oil Clinical Signs: Odd behavior, Drowsiness, Disorientation
Cherry (seeds, wood)
*Chinese Sacred or Heavenly Bamboo
*Choke Cherry (unripe berries)
Chrysanthemum: Results in vomiting, diarrhea, depression, drooling and appetite loss. Causes allergies in humans as it is a ragweed relative.
Croton (Codiaeum sp.)
Crown of Thorns aka Christ Plant, Christ Thorn, Crown of Thorns Toxic Principle: Miliamines, Terpenes, Diterpenes, Alkaloidal esters of diterpenoid ingenol, Stems: the juice, leaves, and thorns Clinical Signs: Eye irritation, Vomiting, Skin irritation, Diarrhea, Irritation to gastrointestinal tract
Daffodil / Bulbs: Clinical Signs: Can cause severe gastrointestinal illness, convulsions, seizures, low blood pressure and tremors.
*Delphinium, larkspur, monkshood
Dumb Cane aka Dumb Plant, Dumb Cane, Mother-in-law’s Tongue Plant Toxic Principle: Histamine poisoning, All parts: leaves, stems, sap, Proteolytic enzymes, Calcium oxalate crystals, Other toxins Clinical Signs: Swelling of throat, Impairment of speech, Excessive salivation, Pain and swelling of mouth, Skin rashes
Eggplant: The leaves of the plant on which the eggplant fruit grows are poisonous, but the fruit itself is said to be safe. Some sources caution of overly ripe or under-ripe eggplant fruit.
Elderberry (unripe berries)
Fiddle-leaf Philodendron aka Tree Philodendron, Cut-leaf Philodenron Toxic Principle: Nephrotoxic, Entire Plant, Leaves, Oxalates, Calcium oxalate Clinical Signs: Dermatitis, Excessive salivation, Red and swollen oral cavity, Pain, swelling, irritation to throat, Irritation and burning of mouth, lips, and tongue
Holly: Commonly found during the Christmas season, can cause intense vomiting, diarrhea and depression.
Flax ?? (Controversial - This may be the case in large quantities - consult with your vet)
Kalanchoe aka Florist’s Kalanchoe, Kalanchoe, Palm Beach Belle Toxic Principle: Isoprene alkaloids, Cardiac glycosides, Cardiac bufadienolides, Bryotoxins, Non-toxic maybe - Clinical Signs: Labored respiration, Cardio-toxic effects, Excessive salivation, Digestive disturbance, Loss of interest in food and water
Lobelia (some species), all parts
*Mistletoe Berries: A Christmas plant, ingestion can cause significant vomiting and diarrhea, difficulty breathing, collapse, erratic behavior, hallucinations and death.
Nectarine (seeds, wood)
Oleander aka Rosa Laurel Toxic Principle: Seeds, Vase water, Whole plant, Smoke from burning, Cardioactive glycosides Clinical Signs: may cause diarrhea, nausea, vomiting, slowing of heart-rate, abdormal heart beat patterns, heart failure and possible death.
*Onions (toxic to birds, small amount ok)
*Peach (seeds, wood)
*Pencil cactus plant
Philodendron aka Sweetheart Plant, Heart-leaf Philodendron, Parlor Ivy Toxic Principle: Nephrotoxic, Entire Plant, Leaves, Oxalates, Calcium oxalate Clinical Signs: Dermatitis, Excessive salivation, Red and swollen oral cavity, Pain, swelling, irritation to throat, Irritation and burning of mouth, lips, and tongue
Plum (seeds, wood)
Poinsettia: Clinical Signs: Can cause irritation to the mouth and stomach and sometimes vomiting
Potato (green seed balls, green tubers; plant, leaves and stem)
*Rhubarb: Rhubarb leaves are poisonous but the edible rhubarb stalks are safe.
Schefflera aka Umbrella Tree, Starleaf, Australian Umbrella Tree Toxic Principle: Entire Plant, Saponins, Falcarinol, Calcium oxalate, Oxalic acid Clinical Signs: Dermatitis, Vomiting, Leukopenia, Loss of coordination, Irritation of mouth, lips, and tongue
*Shamrock (Oxalis sp.)
Spindle Tree, Euonymus (some species), leaves, fruit, bark
Spreading English Yew
Spurge (Euphorbia sp.)
Star of Bethlehem
Sweet Pea - Lathyrus latifolius - L.: Although no records of toxicity have been found for this plant, the seed of some species in this genus contain a toxic amino acid that can cause a severe disease of the nervous system known as 'lathyrism' if they are eaten in large amounts (although small quantities are said to be nutritious). Great caution is advised. Ref. www.pfaf.org
Tomatoes (leaves and stem)
Tulip: Clinical Symptoms: Can cause intense vomiting, depression, diarrhea, drooling and appetite loss.
Wild Call Wisteria
Yucca aka Spineless Yucca, Soapweed, Spanish Bayonet Toxic Principle: Spines, Furostanols, Leaves, Saponins [steroidal], Spirostanols – sarsasapogenin Clinical Signs: Vomiting, Bloat, Diarrhea, Nausea, Mechanical damage
Zamioculcas - an indoor plant. All parts of the plant are poisonous if ingested.