Bamboo is one of the most unique plants on earth. Unlike trees, bamboo grows initially at full width, with no tapering or horizontal growth. Some species can grow up to three feet a day! After just one year, bamboo reaches its full height, and in subsequent years, the stem continues to harden. The strength of the bamboo continues to increase for the next two to four years; most species of bamboo are considered fully mature in just two to three years.