Clumping bamboo species tend to spread slowly, as the growth pattern of the rhizomes is to simply expand the root mass gradually, similar to ornamental grasses.
"Running" bamboos, though, need to be controlled during cultivation because of their potential for aggressive behavior.
However, the size range for mature bamboo is species-dependent, with the smallest bamboos reaching only several inches high at maturity.
A typical height range that would cover many of the common bamboos grown in the United States is 4.5–12 m (15–39 ft), depending on species.
The bamboos comprise three clades classified as tribes, and these strongly correspond with geographic divisions representing the New World herbaceous species (Olyreae), tropical woody bamboos (Bambuseae), and temperate woody bamboos (Arundinarieae).Bamboos include some of the fastest-growing plants on Earth, with reported growth rates up to 91 cm (36 in) in 24 hours.However, the growth rate is dependent on local soil and climatic conditions, as well as species, and a more typical growth rate for many commonly cultivated bamboos in temperate climates is in the range of 3–10 cm (1.2–3.9 in) per day during the growing period.are evergreen perennial flowering plants in the subfamily Bambusoideae of the grass family Poaceae.In bamboo, as in other grasses, the internodal regions of the stem are usually hollow and the vascular bundles in the cross section are scattered throughout the stem instead of in a cylindrical arrangement. The absence of secondary growth wood causes the stems of monocots, including the palms and large bamboos, to be columnar rather than tapering. Certain species of bamboo can grow 91 cm (36 in) within a 24-hour period, at a rate of almost 4 cm (1.6 in) an hour (a growth around 1 mm every 90 seconds, or 1 inch every 40 minutes).