Individual Banana Peppers can grow up to 8-9 inches in length. As they ripen, peppers change from yellowish-green, to yellow, and finally to red. The longer they are allowed to ripen, the sweeter they get! Similar to other C.annuum peppers, Banana Peppers provide a great source of Vitamin C (which increases with ripening) along with carotenoids (especially pro-Vitamin A). Banana Peppers also deliver healthy flavonoids such as quercetin and luteolin, which have anti-inflammatory properties.