There are over 1,000 bamboo (Bambusa sp.) cultivars growing in U.S. Department of Agriculture plant hardiness zones 5 through 9. While most plants are easily propagated from seed, certain types of bamboo can take up to 70 years to flower and produce seed. The seeds from bamboo are short-lived and do not store well. The most common ways to start another bamboo plant from an existing plant is through division, layering or cuttings.