Spinach (Spinacia oleracea) is a flowering plant in the family of Amaranthaceae. It is native to central and southwestern Asia.
It is an annual plant (rarely biennial), which grows to a height of up to 30 cm. Spinach may survive over winter in temperate regions.
Spinach is an excellent source of iron, calcium, chlorophyll, beta carotene (needed for the production of vitamin A), vitamin C, riboflavin, sodium and potassium. The sulphur content of spinach helps to clean the liver, and its vitamin A content can help prevent night blindness. Spinach has a high calcium content, however the oxalate content in spinach binds with calcium decreasing its absorption. Spinach is a rich source of antioxidants.