Yellow Capsicum - Go yellow! Yellow Bell Peppers are simply green bell peppers that have matured. The difference in colour of red green orange and yellow bell peppers is on account of their maturity and ripeness. The green peppers are the unripe ones, being plucked prematurely. Red peppers are the ripest of all. They require more time to grow and thus are also priced highly.  the yellow ones fall somewhere in the middle. Red and yellow peppers contain twice the amount of vitamin C than their younger sibling, green pepper. As they ripen, peppers vary in nutritional content.  Yellow peppers are botanically called Capsicum annuum and belong to the Nightshade family. They are native to Tropical America, growing since ancient times. The Spanish and Portuguese explorers brought Yellow Peppers to Asia and Europe around 1493. Besides the element of crunch that they add to food, they are loaded with vitamins and antioxidants they are said to have a higher number of nutrients th...