Organic White Button mushroom blocks. We now have 2 sizes, large and hobby size! The hobby size will produce up to 3kg over 10-12 weeks and the Large size will product up to 7kg over 10-12 weeks with the first crop ready within around 21 days! How cool is that? Your very own food source within such a short period of time. That means no need for the supermarket for these delicious alternatives to meat! Yay. Best of all they are packed full of goodness and simply delicious to eat. You'll notice the difference from the supermarket mushrooms straight away!