Aconite Roots, Foliage & Seeds: Toxic if eaten, causing nausea and vomiting. May also affect cardiac function – increased heart rate.

African Violet Leaves

Aloe Vera: Diarrhoea

Amaryllis Bulbs: Upset stomach, hyperactivity, lethargy, coma, shock. Can be fatal.

Angels’ Trumpets: Toxic if eaten, causing nausea and vomiting.

Angel Wings: Upset stomach, oral irritation, asphyxiation, tremors, seizures, loss of balance. Can be fatal.

Apple Seeds: Seeds contain cyanide. Varied toxic effects.

Apple Leaf Croton

Apricot Kernels: Kernels contain cyanide. Can be fatal.

Arborvitae: Harmful if eaten in quantity. May cause a skin allergy.

Arrow Grass Leaves

Asparagus Fern: Contains a wide variety of poisons resulting in a large range of symptoms.

Autumn Crocus: Vomiting, nervous excitement. May cause dermatitis.

Avocado Fruit & Pith: Diarrhoea, vomiting, laboured breathing. Can be fatal.

Azaleas: Nausea, vomiting, depression, difficulty breathing and coma. Can be fatal if eaten in large enough quantities.

Baby’s Breath

Barilla Leaves & Stems

Bird of paradise Seeds: Gastrointestinal tract affected by the plant toxins.

Bittersweet: Toxic if eaten, causing nausea and vomiting.

Bleeding Heart Foliage & Roots: Poisonous in large amounts, contains convulsant properties. May also cause dermatitis.

Bluebell: Harmful if eaten in quantity.

Box Leaves

Boxwood Leaves & Twigs: Upset stomach, heart failure, excitability or lethargy. May also cause dermatitis.

Bracken: Thiamine deficiency, acute haemorrhagic syndrome, blindness, tumours.

Broom

Buckeyes Nuts & Immature Growths: Harmful if eaten in quantity.

Burning Bush: Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Buttercup: Juice may severely injure digestive system. May also cause dermatitis.

Caladium

Calico Bush: Harmful if eaten in quantity.

Calla Lily Leaves: Harmful if eaten in quantity.

Caper Spurge

Cardinal Flower

Castor Bean Leaves & Seeds: May cause dermatitis. A single Rosary Pea or one/two Castor bean seeds can be fatal.

Ceriman: Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Chenille Plant

Cherry Kernels: Kernels contain cyanide.

Cherry Laurel: Harmful if eaten in quantity.

China Berry

Chinese Evergreen

Christmas Rose Leaves & Roots: Harmful if eaten in quantity.

Chrysanthemum Leaves & Stems: May cause dermatitis.

Cineraria

Clematis: Gastrointestinal tract and nervous system affected by plant toxins. May cause dermatitis.

Cocoa Husks or Mulch: Similar toxic effects to that of chocolate – hyperactivity, increased heart rate. Can kill if enough is eaten.

Corn Cockle Seeds: Harmful if eaten in quantity.

Corn plant

Crocus

Croton

Crown Vetch

Cuckoo Pint: Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Crowfoot

Cycads

Cyclamen: Gastrointestinal tract affected. Convulsions and paralysis.

Daffodil Bulbs: Nausea, vomiting, diarrhoea. May also cause dermatitis. Can be fatal.

Daphne: Gastrointestinal tract and kidneys affected. May cause dermatitis.

Datura

Deadly Nightshade: Toxic if eaten, causing nausea and vomiting.

Delphinium Seeds & Young Plants: Harmful if eaten in quantity.

Devil’s Fig: Harmful if eaten in quantity.

Dieffenbachia: Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, seizures, loss of balance, asphyxiation. Can be fatal.

Dragon Tree: Vomiting and diarrhoea.

Dumb Cane: Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, seizures, loss of balance, asphyxiation. Can be fatal.

Dwarf Morning Glory: Harmful if eaten in quantity.

Easter Lily: Especially poisonous to cats.

Echium: Harmful if eaten in quantity. May cause a skin allergy.

Elder Leaves, Root & Bark

Elderberry: Nausea and vomiting.

Elephant Ears: Intense burning, irritation and swelling of the mouth and throat. If tongue swells enough to block air passage can be fatal.

English Ivy Berries & Leaves: Gastrointestinal tract affected. May cause dermatitis.

European Spindle: Harmful if eaten in quantity.

False Hellebore Roots, Seeds & Leaves: Toxic if eaten, causing nausea and vomiting.

Flannel Flower: Harmful if eaten in quantity.

Flax: Harmful if eaten in quantity.

Foxglove Leaves & Seeds: Toxic if eaten, causing nausea and vomiting.

Fritillary

Fruit Salad Plant: Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Gaultheria: Harmful if eaten in quantity.

Geranium

German Ivy Berries & Leaves: Gastrointestinal tract affected. May cause dermatitis.

German Primula: Toxic if eaten. May cause skin allergy.

Glory Lily: Toxic if eaten, causing nausea and vomiting.

Golden Chain Seed Capsules: Toxic if eaten, causing nausea and vomiting.

Granny’s Bonnets: Harmful if eaten in quantity.

Heavenly Bamboo

Hellebores

Heliotrope

Hemlock

Henbane: Toxic if eaten, causing nausea and vomiting.

Hibiscus

Holly Berries: Upset stomach, tremors, seizures, loss of balance.

Horse Chestnut Nuts & Leaves: Harmful if eaten in quantity.

Hurricane Plant Bulb: Varied toxic effects. Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Hyacinth Bulbs: Harmful if eaten in quantity. May cause a skin allergy.

Hydrangea

Iris Roots: Severe digestive upset. May cause dermatitis.

Ivy Plant: Harmful if eaten in quantity.

Jack In The Pulpit: Causes burning to the mouth. Can cause hallucinations.

Japanese Spindle: Harmful if eaten in quantity.

Japanese Yew

Jessamine Berries & Sap: Digestive disturbance. Gastrointestinal tract and nervous system affected. Can be fatal.

Jerusalem Cherry Immature Growths: Gastrointestinal tract affected. May cause dermatitis.

Jimson Weed Thorn Apple: Abnormal thirst, distorted sight, delirium, incoherence, coma. Can be fatal.

Jonquil Bulb

Juniper

Kalanchoe: Depression, rapid breathing, teeth grinding, ataxia, paralysis

Kale: Haemolytic anaemia, goitre, possible reduced fertility

Kingcup: Harmful if eaten in quantity.

Laburnum Leaves & Seeds: Toxic if eaten, causing nausea and vomiting.

Lantana: Toxic if eaten, causing nausea and vomiting.

Larkspur Young Plants & Seeds: Digestive upset, nervousness, depression. Cardiovascular system affected. May cause dermatitis. Can be fatal.

Laurel: Harmful if eaten in quantity.

Lenton Rose: Harmful if eaten in quantity.

Leopard Lily: Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Leyland Cypress: Harmful if eaten in quantity. May cause a skin allergy.

Lily: Harmful if eaten in quantity.

Lily Of The Valley Leaves, Flowers & Roots: Toxic if eaten, causing nausea and vomiting.

Lily Of The Valley Bush

Lobelia: Harmful if eaten in quantity. May cause a skin allergy.

Locust: Nausea and weakness.

Lupin Leaves & Seeds: Harmful if eaten in quantity.

Mallow: Harmful if eaten in quantity.

Maple Tree

Marijuana: Contains hallucinogens.

Marsh Marigold: Harmful if eaten in quantity.

May Apple Apples, Roots & Foliage: Severe diarrhoea. Nervous system affected.

Meadow Rue: Harmful if eaten in quantity.

Mezereon

Milkweed: Harmful if eaten in quantity. May cause a skin allergy.

Mistletoe Berries: Gastrointestinal tract affected. May cause dermatitis. If eaten by a puppy, a few berries can be fatal.

Monkshood: Digestive upset and nervous excitement. Cardiovascular system affected.

Morning Glory Seeds & Roots: Harmful if eaten in quantity.

Moroccan Broom: Harmful if eaten in quantity.

Mother-In-Law’s Tongue Leaves: Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, seizures, loss of balance, asphyxiation. Can be fatal.

Mountain Laurel: Harmful if eaten in quantity.

Naked Ladies: Toxic if eaten, causing nausea and vomiting.

Narcissus Bulbs: Nausea, vomiting, diarrhoea. May cause dermatitis. Can be fatal.

Needlepoint Ivy Berries & Leaves: Gastrointestinal tract affected. May cause dermatitis.

Nerine

Nightshades: Intense digestive disturbances. Can be fatal.

Oak Tree Foliage & Acorns: Affects kidneys. Symptoms appear after several days.

Oleander: Affects the heart, produces severe digestive upset, extremely poisonous. May cause dermatitis. Can be fatal.

Onion: Causes anaemia. Onions should not be fed to dogs in any form.

Paspalum Seeds: Dermatitis.

Pasque Flower: Harmful if eaten in quantity.

Peace Lily: Gastrointestinal tract affected. May cause dermatitis.

Peach Stones & Leaves: Contain cyanide.

Pencil Cactus

Peony Roots

Peruvian Lily: Harmful if eaten in quantity. May cause a skin allergy.

Philodendron Leaves: Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Pineapple Broom: Harmful if eaten in quantity.

Poinsettia Leaves, Stems & Sap: Diarrhoea, abdominal cramps, delirium. Sap can cause irritation and if rubbed in eyes, blindness. May also cause dermatitis.

Poison Hemlock: Nervous system affected. May cause dermatitis. Can be fatal.

Poison Ivy Leaves, Bark & Fruit: Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Poison Oak Leaves, Bark & Fruit: May cause dermatitis.

Poison Sumac: Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Pokeroot: Toxic if eaten, causing nausea and vomiting.

Pokeweed: Toxic if eaten, causing nausea and vomiting.

Poppy Unripe Seedpod: Harmful if eaten in quantity.

Potato Green Skin & Sprouts

Prickly Poppy: Harmful if eaten in quantity.

Primrose Leaves: Upset stomach. May cause dermatitis.

Privet Leaves: Harmful if eaten in quantity.

Ragwort: Causes kidney failure and liver damage which is irreversible. Minute doses fatal, often wrongly diagnosed.

Raisins: Causes kidney failure. Can be fatal.

Rape: Haemolytic anaemia, blindness, damage to nervous system, digestive disorders, breathing problems.

Red-Ink Plant: Toxic if eaten, causing nausea and vomiting.

Rhododendron: Nausea, vomiting, depression, difficulty breathing and coma. Can be fatal.

Rhubarb Leaves: Large amounts of raw or cooked leaves can cause convulsions and coma. Can be fatal.

Rosebay: Toxic if eaten, causing nausea and vomiting.

Rose Periwinkle: Harmful if eaten in quantity.

Rue: Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Sago Palm: Can be fatal.

Savin: Harmful if eaten in quantity.

Schefflera: Harmful if eaten in quantity. May cause a skin allergy.

Silkweed: Harmful if eaten in quantity.

Snowdrops

Solomon’s Seal: Harmful if eaten in quantity.

Spider Plant: May cause vomiting and salivation.

Spruce Tree

Spurge: Harmful if eaten in quantity. May cause a skin allergy.

Squill: Harmful if eaten in quantity.

Star-of-Bethlehem Bulbs: Harmful if eaten in quantity.

Starflower: Harmful if eaten in quantity.

St Johns Wort: Harmful if eaten in quantity.

String Of Pearls / Beads

Sweet Pea Stem: Harmful if eaten in quantity.

Swiss Cheese Plant: Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Taro Vine: Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Tiger Lily: Especially poisonous to cats.

Tobacco Plant Leaves: Harmful if eaten in quantity.

Tobira

Tomato Plant Green Fruit, Stem & Leaves

Tulip: Harmful if eaten in quantity. May cause a skin allergy.

Umbrella Plant: Toxic if eaten, causing vomiting, diarrhoea.

Varnish Tree: Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Walnut Green Hull Juice

Water Dropwort (Hemlock): Rapid-onset violent convulsions. Can be fatal.

Water Hemlock: Violent painful convulsions. Can be fatal.

Wax Tree: Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Weeping Fig

Wild Cherry Tree Twigs & Foliage: Gasping, excitement, prostration. Can be fatal.

Windflower: Harmful if eaten in quantity.

Wisteria Pods & Seeds: Nausea, repeated vomiting, stomach pains, severe diarrhoea, dehydration and collapse.

Wolfsbane: Toxic if eaten, causing nausea and vomiting.

Woody Nightshade: Toxic if eaten, causing nausea and vomiting.

Yarrow

Yew Berries & Foliage: Dizziness, dry mouth and mydriasis develop within one hour, followed by abdominal cramping, salivation and vomiting. Foliage is more fatal than berries, death can be sudden without warning or symptoms. Can be fatal.

Anticoagulant Rodenticides: Difenacoum, Bromadiolone, Brodadiolone, Coumatetralyl.

Ibuprofen: Nurofen, Advil.

Metaldehyde: Slug bait.

Human Oral Contraceptives: Very low toxicity.

Chocolate / Theobromine

Diclofenac Sodium: A similar drug to Ibuprofen.

Salbutamol: Ventolin inhalers.

Alphachloralose Rodenticides

Paraquat

Wallpaper Paste: Very low toxicity.

Borax / Boric Acid Ant Killer Gels

Bone Meal

Glyphosate-based Herbicides

Aspirin

Cannabis

Batteries

Bendiocarb: Powder ant killers.

White Spirit / Barbecue Lighter Fluid

Antifreeze

Loperamide: Anti-diarrhoea drug.

Bleach

Pyrethrin-based Insecticides

Creosote

Temazepam