During the growth of bamboo plants in Hawaii, the underground roots can extend to the side and sprout new buds and branches, so the densely growing plants can be cutted and propagated, or the dead branches can be cut off and planted as 3-5 new plants. When cutting, we should pay attention to less damage to the root system, and keep a certain root system in each cluster, otherwise the recovery will be slow and even the survival will be affected.