Poisonous Plants

Here is a quick checklist of the most commonly found poisonous plants in the UK home, countryside and garden, and their symptoms. If any of these are eaten, seek medical help immediately.

Garden and Countryside

• Buttercup (sap): rash, skin irritation.
• Daffodil (bulb): vomiting, diarrhoea.
• Deadly nightshade (all parts): no symptoms for several hours, then dilated pupils, dry mouth, agitation. Can be fatal.
• Honeysuckle (berries): vomiting, diarrhoea.
• Horse chestnut (seeds - conkers): vomiting, diarrhoea.
• Holly (berries): vomiting, diarrhoea
• Ivy (berries): skin rash, then vomiting, diarrhoea.
• Laburnum (all parts, seeds most dangerous): burning in mouth, then projectile vomiting, headache, delirium and hallucinations. 
• Wild arum (berry-like seeds):
• Black Bryony (berries):
• Woody Nightshade (berries):
• Dogwood (berries):
• Spindle tree (berries): 
• Yew (berries):

Houseplants

• Dumbcane (sap): burning in mouth, tongue swells. Can cause choking.
• Hyacinths (sap): burning in mouth.

Very old magazine cutting, no date or attribution.