As a visual barrier to a home next door, we have been thinking of a large plant in a pot, which would be physically very close to the spa. We would need something in the 6-8' height and 3-4' wide eventually. One suggestion was a cherry laurel, but I realize I have no idea what would work from a "debris generator" standpoint. I thought of clump bamboo, but just concerned about sloughing off of the stalks. What would you suggest?