Davis Mushrooms has been family-owned and operated for over three generations. currently owned by Lou Manfredi. Grown in a temperature regulated environment, these exotic mushroom varieties are available year-round. Mushrooms are one of the most difficult crops to grow, requiring advanced technology and intensive labor. Roughly 63 percent of US mushrooms are grown in Pennsylvania, and Kennett Square, where Davis Mushroom is located, is known as the Mushroom Capital of the World due to its high volume of mushrooms, producing over one million pounds of mushrooms a day!