Poisonous Plants

Not many people are fully aware of the breadth of plants which are toxic or harmful to their cats. Below is a list of various plants that at the time of printing were known to be poisonous.


Flowering Plants	Poisonous part
Monkshood	All
Autumn Crocus or Meadow Saffron	All esp. corm and seed
Lily of the Valley	All
Larkspur	Seeds and leaves
Foxglove	All
Christmas Rose (Hellebore)	All
Iris – Blue Flag	All
Lupin	All esp. seed
Narcissus & Daffodil	Bulb
American Mandrake	All esp. green berries


Flowering Plants	Poisonous part
Rhubarb	Leaves
Potato	All greave parts


Ornamental Shrubs and Trees	Poisonous part
Broom	Seeds
Mezereon (Daphne)	All esp. bark and berries
Laburnum	All esp. bark and seeds
Cherry Laurel	All
Rhododendron & Azalea	Leaves and flowers
Kalmia & American Laurel	Leaves and flowers
Calico Bush & Sheep Laurel	Leaves and flowers
Yew	Leaves and seeds

Weeds and Hedgerow Plants
Poisonous Part

Deadly Woody Black & Garden Nightshade All

White & Black Bryony All

Greater Celandine All

Thorn Apple (Datura) All

Spindle All

Spurges All

Privet Berries and leaves

Buttercup & Crowfoot Sap

Woodland Plants
Poisonous Parts

Fly Agaric (Amantia) All

Panther and Death Cap All

Cuckoo Pint All esp. berries

Lords and Ladies All esp. berries

Wild Arum All esp. berries

Spurge Laurel All esp. berries and bark

Dog’s Mercury All

Oak Acorn and leaves

Poison Ivy All

Swamp Plants
Poisonous Parts

Marsh Marigold Sap

Kingcup Sap

Cowbane All

Hemlock and Water Dropwort All esp. new leaves

House Plants
Poisonous Parts

Dumb Cane All

Poinsettia Sap leaves flowers and fruit

Hyacinth Bulb

Caster Oil Plant Seeds

Mistletoe Berries

This article was written some years ago. Please make your own checks to reflect current knowledge when buying plants or allowing your own cats near to them.