This all-round cubensis is one of the strongest “survivors” on the market. Because the B+ mushroom is so resilient, it can even grow well in colder temperatures and can easily be spawned outside. B+ spores can grow mushrooms as long as your underarm. B+ is so efficient that it only stops fruiting when there are close to zero nutrients around and the mycelium can no longer be supported. When you are new to mycology, this strain is a very good one to start off with.