Poisonous Plants -
Household & Garden Substances

Page 7



Common Name Botanical Name Details
St. John's Wort Hypericum perforatum Harmful if eaten in quantity.
Sweetpea Lothyrus odoratus Harmful if eaten in quantity.
Swiss Cheese Plant Monstera deliciosa Causes diarrhea and oral irritation if eaten. May cause dermatitis.
Taro Vine monstera deliciosa Causes diarrhea and oral irritation if eaten. May cause dermatitis.
Tiger Lily Lillium (Especially poisonous to cats)
Tobacco Plant (leaves) Nicotiana Harmful if eaten in quantity.
Tulip Tulipa species Harmful if eaten in quantity. May cause a skin allergy.
Umbrella Plant Schiefflera Toxic if eaten, causing vomiting and diarrhea.
Varnish Tree Toxicodendron vernicifluum Poisonous.
Can cause severe blistering dermatitis if they come into contact with the skin.
Water Hemlock Cicuta maculata Violent painful convulsions
Can Be Fatal
Wax Tree Toxicodendron succedaneum Poisonous.
Can cause severe blistering dermatitis if they come into contact with the skin.
Wild Cherry tree (twigs & foliage) Prunus avium Gasping, excitement, prostration
Can Be Fatal
Windflower Anemone species Harmful if eaten in quantity.
Wisteria (pods & seeds) Wisteria Nausea, repeated vomiting, stomach pains, severe diarrhea, dehydration and collapse.
Wolfsbane Aconitum septentrionale Toxic if eaten, causing nausea and vomiting.
Woody Nightshade   Toxic if eaten, causing nausea and vomiting.
Yew (berries & foliage) Taxus species 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 and without warning
Can Be Fatal


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