"Where do you get your bamboo? Everybody that makes bamboo fly rods gets their bamboo from basically the same place. The Sui River Valley of southern China has been the origin of all bamboo rods really since about 1900 when they switched from Calcutta from India to Tonkin bamboo which comes from China. You could make it out of other bamboos for sure, but it would have to be heavier and less powerful. And why would you not just use the best."
-Bill Oyster