which plants have toxin ?

There are many houseplants which are perfectly safe to grow but as lovely and harmless as others may appear, they can be toxic and/or dangerous in other ways. It is important to be as knowledgeable as possible about the plants growing in and around your home. Chemicals concentrated in the cells of roots, leaves, bark and seeds serve as the plant's defense against insect and animal attack. Some of these compounds can be toxic, especially if ingested or touched by humans or pets and can, result in adverse reactions. A few plant families to be wary of include: the Poinsettia family (Euphorbiaceae), the Philodendron family( Araceae), the Cactus family (Cactaceae), and the Tomato family (Solanaceae). Dumbcane (Dieffenbachia), in the Araceae family, has plant parts which contain oxalate crystals. If ingested these can cause the tongue to swell so severely that breathing stops. Crown of Thorns (Euphorbia), a succulent in the Euphorbiaceae family has toxic sap which can irritate the skin. Among the most poisonous are the compounds found in Castor Bean (Ricinus communis) and Oleander (Nerium oleander) both of which can be deadly if ingested. For a long list of poisonous house or garden plants, please visit this link : http://www.gardeningfromthegroundup.us/Poisonous%20house%20%20plants.htm To name a few, we have the Aloe sp. (Burn plant).Ingestion of the latex (juie) can cause a cathartic (purging) reaction by irritating the large intestine. Aloe is a popular house plant due to its reputation as a healing plant for burns, cuts and other skin problems but contact dermatitis can occur in sensitive individuals. If you use Aloe, you should cut away the skin and inner layer of yellow juice leaving only the actual gel. The yellow juice, especially prominent in older plants, is the primary irritant in the cases of contact dermatitis. You should test a small area of skin, such as the inner forearm, for a reaction before more general use. Cacti; Opuntia, Cereus, Aporocactus Lophophora,Euphorbia etal, Bunny ears, and others Poisonous parts various Toxins various. Besides the ever present thorns and glochids which can cause painful skin irritation some species will have various toxins. Keep all these plants out of reach of small children.