There are a number of things that are poisonous to babies. Some of the common ones are orchids, azaleas, hyacinth, tulips, cyclamen, Lillies, and irises. The culprit is generally the sap. Contact with the sap can cause skin irritation or, in severe cases, even make your baby's system slow down. It is wise to remember that these plants are not to be kept at homes where children are present at all times. Do not forget to discuss this with your pediatrician and make your home safe for your child.