100-500 SHU.From southern Italy, the Pepperoncini is best known for pickled peppers. Also known as Italian sweet peppers or Tuscan peppers, are a mild, tangy variety of Capsicum annuum. These peppers are typically harvested when they reach 2-3 inches in length and turn a vibrant green or yellow-green. Known for their slightly wrinkled skin and crisp texture, pepperoncini peppers are often pickled and used in salads, sandwiches, and antipasto platters. The plant produces fruits that grow from 2-5 inches long.