Caution Should be Excercised if you are planning a garden that will be used by children or pets ......

 

Foxglove (Digitalis Purprea) , this plant is used to produce digitalis, it is a beautiful plant, but excecise appropriate caution.

 

Hemlock.  Used by the greeks as a poison - Socrates was forced to kill himself with poison derrived from this plant.

 

Rue.  Not lethal but exposure to the leaves, in direct sunlight, can result in an adverse reaction.

 

If you think you (or someone you care for) has ingested a poisonous plant then seek medical advice (taking a sample of the plant may help identification).