Onion Tropea tonda has a medium or large-sized bulb, with a round shape slightly crushed at the end. The external shell is characterized by a bright red shade, while the internal flesh is whitish, with a decisively sweet and juicy taste. The Onion Tropea tondas plants may be damaged by particularly moist soils or frequent irrigations, the vegetable must be kept in a sunny and dry environment, but not arid. The ideal sowing period goes from August to November and the harvest must be carried out from April to June. Onion Tropea tonda is rich in fibers, mineral salts and prevents the cellular aging. Excellent against free radicals and ideal to prevent the cardiovascular diseases.