Seattle Bamboo Species
6. Phyllostachys aureosulcata 'Spectabilis' has yellow culms with a green groove, the opposite of aureosulcata "Yellow Groove." Some culms will have a reddish color when exposed to sun. Young culm internodes are rough to the touch and occasionally have a zigzag kink. Some leaves will have a thin white stripe. Used primarily for screening and ornamental plantings. Some clones flowered in the mid 1990s. This bamboo was introduced into the U.S. in 1986 by way of Germany. Maximum Height: 26', Maximum Diameter: 1 1/2", Minimum Temperature: -10° F ,Does best in full sun. Spreading: Very Aggressive

7. Culms of Phyllostachys nigra 'Megurochiku' are green or yellowish green, similar to 'Henon,' but as it ages, the sulcus (culm groove) of this bamboo turns brown or purplish black.
Maximum Height: 54', Maximum Diameter: 3 1/2", Minimum Temperature: 0° F ,Does best in full sun. Spreading: Moderate

All these plants are available for sale, and all of them so far are highly sought after.