30,000 SHU. The Mushroom Red Pepper is an heirloom variety renowned for its unique, flattened, mushroom-like shape and vibrant red color. This sweet pepper produces thick-walled, juicy fruits that are perfect for fresh eating, roasting, and stuffing. The compact, bushy plants thrive in well-drained soil and full sun, making them suitable for gardens and containers. With a mild, sweet flavor and a crisp texture, the Mushroom Red Pepper adds visual appeal and taste to any dish.