This newest form of vivax is colored like the Castillon form of bambusoides - yellow culms with a green sulcus. It is hardier and more vigorous than Castillon. It is going to be one of the most sought after forms due to the brilliant contrast between the yellow culms and the dark green leaves and sulcus, as well as its hardiness. This form sometimes has extra green stripes on the culms as seen in the photos, making it even more spectacular. It is capable of producing 3" to 4" diameter culms in a relatively small area (10' x 10').