Nerium oleander,  most commonly known as oleander or nerium, is a shrub or small tree cultivated worldwide in temperate and subtropical areas as an ornamental and landscaping plant. Its beautiful flowers can be white, pink or red. 

Ricinus communis or castor oil plant,  is a species of perennial plant widespread throughout tropical regions (and widely grown elsewhere as an ornamental plant).

It is commonly known as “Chaste Tree” , “Monk´s pepper” or “Cloister Pepper” because one of its properties is to reduce sexual desire and so it was used as a food spice in medieval monasteries to reduce the monks´ libido.