From the bamboos, they eat seedlings, culms and lateral shoots. The culms of the grass are glabrous and thick. This occurs when the plant sends up new culms from underground rhizomes. The densely tufted culms grow high and thick. It grows in clumps composed of many well-spaced culms. New culms can only form at the very tip of the rhizome. It has lemon-yellow culms (stems) with green stripes and dark green leaves. A Bamboo flooring is typically made by slicing mature bamboo poles or culms into strips. The culms (stems) are often solid. Raw bamboo charcoal is made of bamboo plant parts such as culms, branches, and roots. Tropical bamboo can be propagated with cuttings or by covering complete culms with soil. It has erect culms which are long. Phyllostachys atrovaginata is a running bamboo with strongly tapered, stiff, upright culms. Plain bolted connections can show brittle behavior due to longitudinal splitting of bamboo culms. Under favorable conditions, the erect culms can reach 3m in height.