Bamboo is really a giant grass, hence its inclusion in the grass category. There are two main types of bamboo – clumping and running. Clumping varieties will increase gradually and not take over the universe. Bambusa and most Fargesia will do well in this area. Running bamboos can become very invasive if allowed to do so, but will also do well in large pots, thereby containing their roots and possible spread. Growth can also be controlled by limiting water and fertilizer. Phyllostachys aurea and P. nigra are both cold hardy, but do prefer afternoon shade in the north county.