There have been many surprises in the ongoing research on poisonous plants for the As Potent as a Charm series. Not the least is the number of common landscape/foundation plantings that add a hint of danger to the structure of the garden, such as this threesome of familiar shrubs:

A Deceptive Welcome
Rhododendron, Rhododendron

Pleasant Valley
Yew, Taxus baccata

Be Still
Oleander, Nerium oleander