Who does not love a bunch of flowers, especially lilies! They make for a handy gift on occasions and look beautiful growing in the garden as well. However, the story is quite different for the pets at home. Lilies are extremely poisonous for cats. Even little quantities like a couple of lily petals have turned fatal in many instances. True lilies or Lilium and Hemerocallis varieties of the plant are the most dangerous ones causing nephrotoxicity or in simpler words kidney failure in cats. Another problem here is that many different plants are referred to as lilies.
Another variety of the plant called, Convallaria (lily of the valley), has toxic effects because it has strong cardiac glycosides similar to digitalis. Even more confusing as to which lilies are toxic is the fact that many hybrids exist. All parts of the plant are poisonous – this includes the flowers, the leaves, the stem, the pollen and even the water in the vase or the water used to wash them will contain enough chemicals to cause damage.