I Got a few bamboo specimens from a friend at the end of July. the Leaves turned Yellow and Fell off. Only one stayed green, that leaf recently fell off in a storm. The stalk is still green and i cannot obtain a new specimen. It was spreading in the ground at my friends, but i do not want to piut it int the ground from its 10 inch pot. How can I save this plant? Cut it down and put in rooting hormone?