Grow your own white mushrooms just like those in your local grocery store, only FRESHER! The white button mushroom is the most widely cultivated mushroom in the USA. The caps in the button stage are usually 1-3" in diameter, but if left to mature the caps can reach 5-8". You can enjoy eating this mushroom many ways -in salads, sautéed, or grilled. Our kits grow mushrooms with ease and are very productive. Crops grow back every 10-14 days until the kit uses up all its nutrients. Approximately 4 pounds of mushrooms grow during a 2-3 month period. The mushroom growing kit contains inoculated mushroom compost, casings, and instructions. All you add is water! Mushroom kit dimensions: Length 12", Width 10", Height 8", Weight: 12 lbs.