Keystone Giant Sweet Pepper - 4 Live Plants Keystone Giant Bell Pepper is a lovely jade green and then ripens to a brilliant scarlet red. Due to its huge size and thick walls, this bell pepper variety is ideal for creating stuffed bell peppers. The Keystone Giant Bell Pepper is an extremely large bell pepper variety that was developed from California Wonder, for not only its huge size, but also to be resistant to mosaic virus. This great pepper variety produces a large number of large, four inch by four and three quarter inch bell peppers with very thick walls. Immediate shipping