The first cactuses appeared in the territory of South America and Africa 30-40 million years ago. These are plants which stand well the heat and the temperature of 60 degrees Celsius is comfortable for them. In the 16th century cactuses were delivered by Europeans from America to Europe as beautiful ornamental plants. Many types of cactuses are used in cooking. Their fruits are often added to compotes, they can be eaten crude, are used for cactaceous jam. Some types of cactuses can eat small insects.