Because bamboo grows so rapidly, it generally needs regular fertilization to keep it growing well. However, avoid fertilizing the first year after division. Keep plants watered regularly during their first year. After they become established, they will be more drought-tolerant. Bamboo canes need periodic thinning. Remove dead or damaged canes as they appear. Otherwise, remove as many canes as you wish to keep the grove as dense or thin as you desire. A good rule is to prune out canes that are 5-7 years old.