From the ArcaMax Publishing, Trivia Newsletter:
http://www.arcamax.com/news/trivia/s-370666-617054
There are more than 700 species of plants that grow in the United States that have been identified as dangerous if eaten. Among them are some that are commonly favored by gardeners: buttercups, daffodils, lily of the valley, sweet peas, oleander, azalea, bleeding heart, delphinium, and rhododendron.
This news arrived on: 06/29/2008