Grow delicious Portabella mushrooms right on your countertop with this easy to use fruiting kit! Comes complete with instructions to produce up to several pounds of the freshest mushrooms possible in your own home. Brown Agaricus species were the ORIGINAL cultivars grown before the switch to white cultivars in the late 1800s, and in the 1990's the brown varieties experienced a huge resurgence because of their large size and more robust flavors. Portabellas are picked large and the criminis are picked small in the button state, typically on the second flush as the kit runs out of nutrients. Kit typically flushes twice and needs minimal day to day care to produce amazing mushrooms for the grill and smaller ones for salads and sauces! Expect to harvest about 2 to 3 pounds of mushrooms! Kit measures 12x9x6 inches and comes complete with casing soil and directions, just add water and mushrooms fruit in just a few weeks!