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POISONOUS PLANTS.
The plants listed on this page are poisonous. We've created this special index as a public service to perennial gardeners around the world. We do not want to sound alarmist, but the fact is, many ornamental plants are poisonous to some extent.
Toronto gardens contain at least some toxic or poisonous plants. Some of the most popular ornamentals are toxic, including shrubs like Rhododendrons and Hydrangeas, trees like Horse-chestnut and Holly, house plants such as Dieffenbachia and Croton, and other perennials and annuals as well.
Removing every single poisonous plant from your garden may not be truly necessary. We recommend that you side with caution. For more information, please refer to the Canadian Poisonous Plants Information System.
Here is our list, click on the name for more details.
Aconitum (Monkshood)
Actaea (White Baneberry)
Aquilegia (Columbine)
Artemisia (Artemisia)
Arum (Italian Arum)
Asclepias (Milkweed)
Baptisia (False Indigo)
Brugmansia (Angel's Trumpet)
Caltha (Marsh Marigold)
Chrysanthemum (Garden Mum)
Convallaria (Lily-of-the-Valley)
Delphinium (Delphinium)
Dicentra (Bleeding-Heart)
Dictamnus (Gas Plant)
Digitalis (Foxglove)
Euonymus (Wintercreeper)
Eupatorium (Boneset)
Euphorbia (Spurge)
Hedera (English Ivy)
Helleborus (Hellebore)
Hypericum (St. John's-Wort)
Iris (Iris)
Lobelia (Lobelia)
Lupinus (Lupine)
Onoclea (Fern)
Oxalis (Wood Sorrel)
Physalis (Chinese Lantern)
Podophyllum (May Apple)
Polygonatum (Salomon's Seal)
Ranunculus (Buttercup)
Rheum (Ornamental Rhubarb)
Symphytum (Ornamental Comfrey)
Zantedeschia (Calla Lily)
The plants listed on this page are poisonous. We've created this special index as a public service to perennial gardeners around the world. We do not want to sound alarmist, but the fact is, many ornamental plants are poisonous to some extent.
Toronto gardens contain at least some toxic or poisonous plants. Some of the most popular ornamentals are toxic, including shrubs like Rhododendrons and Hydrangeas, trees like Horse-chestnut and Holly, house plants such as Dieffenbachia and Croton, and other perennials and annuals as well.
Removing every single poisonous plant from your garden may not be truly necessary. We recommend that you side with caution. For more information, please refer to the Canadian Poisonous Plants Information System.
Here is our list, click on the name for more details.
Aconitum (Monkshood)
Actaea (White Baneberry)
Aquilegia (Columbine)
Artemisia (Artemisia)
Arum (Italian Arum)
Asclepias (Milkweed)
Baptisia (False Indigo)
Brugmansia (Angel's Trumpet)
Caltha (Marsh Marigold)
Chrysanthemum (Garden Mum)
Convallaria (Lily-of-the-Valley)
Delphinium (Delphinium)
Dicentra (Bleeding-Heart)
Dictamnus (Gas Plant)
Digitalis (Foxglove)
Euonymus (Wintercreeper)
Eupatorium (Boneset)
Euphorbia (Spurge)
Hedera (English Ivy)
Helleborus (Hellebore)
Hypericum (St. John's-Wort)
Iris (Iris)
Lobelia (Lobelia)
Lupinus (Lupine)
Onoclea (Fern)
Oxalis (Wood Sorrel)
Physalis (Chinese Lantern)
Podophyllum (May Apple)
Polygonatum (Salomon's Seal)
Ranunculus (Buttercup)
Rheum (Ornamental Rhubarb)
Symphytum (Ornamental Comfrey)
Zantedeschia (Calla Lily)