Prized for their beauty, daffodils grow from bulbs that could be mistaken for an edible food, like an onion. Daffodils — also known by their Latin name Narcissus — are common ornamental plants with a bright, cheery and mostly toxin-free flower. Most daffodils are deer- and vermin-resistant, but gardeners shouldn't overlook the dark side of this plant. The Greek philosopher Socrates sometimes referred to daffodils as the "Chaplet of the infernal Gods" because of the plant's numbing effect.