紫背天葵又称红背菜、红凤菜、观音菜、血皮菜、水前寺菜，原产中国，四川、台湾栽培较多。一般株高３０厘米，叶面深绿而略呈紫色，叶背紫红色，微肉质。其嫩茎叶中含有较全面的对人体有益的营养成分。紫背天葵耐热不耐寒，在南方表现为常绿、多年生，不能在北方露地越冬... Purple back sky Kwai, also known as red back vegetables, red Phoenix dishes, Guanyin dishes, blood vegetables, water Temple dishes, native to China, Sichuan, Taiwan cultivation more. General plant height of 30 cm, dark green leaves a little purple, dorsal purple, fleshy. Its tender leaves contain more comprehensive beneficial nutrients to the human body. Purple back sunflower is not resistant to heat cold, the performance of the evergreen in the south, perennial, can not wintering in the north.