I celand poppy, larkspur, lily of the valley and daphne: all so pretty, but along with dozens of other plants found in our gardens, all toxic to both people and animals.
Eating daphne can cause anything from drooling, vomiting, inflamed kidneys through to arrhythmia, seizures, coma and even death. As with daphne, all parts of the Iceland poppy are toxic, tragically for two local horses who died after eating a rather large portion last century.
Sometimes it is just part of a plant that is toxic, often it is all. Some toxins must be eaten to have effect, others are contained within the sap