Capsicums are seed pods and can be red, green, yellow, orange, white or purple. Green and red capsicums grow on the same plant; it's just that a red pepper is a ripe green one. Yellow, orange, white and purple are different varieties and are not simply less ripe forms of red or green. Capsicums are sweet and juicy with a mild spicy flavour. Shape also varies with variety; from the more commonly found blocky shape to a pointy capsicum.