Peppers are easy- to-grow vegetables that are as pretty on the plate as they are in the garden. Green peppers or bell peppers are sweet to the taste and usually dark green, though depending on the cultivar, the fruit will turn red, yellow, orange, or some other color at maturity.   MOREHot peppers are also easy to grow, but they are a challenge to eat.   MORE See also ISU Extension pamphlet PM1888, "Peppers" available on the Internet from the ISU Extension Online Store.