Cold Hardy Clumping Bamboo - 3 of The 1 Gallon Fargesia Rufa Bamboo 3 of the 1 Gallon Fargesia 'Rufa' - Multi-cane at 18" inches tall (from bottom of container) Non-Invasive yet still fast growing. Cold Hardy Clumping Bamboo with hardiness of -5 degrees. Provides an evergreen bamboo privacy screen. Mature height is 10 feet tall by 1/2 inch in diameter.