Clumping Bamboo - 1 Gallon Fargesia Nitida 'Blue Fountain' Bamboo 1 Gallon Fargesia Nitida - Multi-cane at 12-18" tall Blue Fountain Bamboo is the common name Cold Hardy Clumping Bamboo with hardiness of -20 degrees Provides an evergreen bamboo privacy screen Mature height is 12 feet tall by 1/2 inch in diameter.