Bamboo is a grass, and some of its species can grow quickly enough to be measured in hours.

The longer version

Grasses include everything from lawn turf to bamboo, and bamboo shows what the group can do. Its culms are hollow tubes reinforced by nodes, a design that gives height and stiffness without the cost of building solid wood.

Growth happens at the base of each segment, where several regions elongate at the same time rather than one tip extending. A culm can therefore add visible height within a single day under warm, wet conditions. Once a shoot reaches full size it hardens and stops, so the clump expands by sending up fresh shoots. The hollow design also makes culms light to carry, which is why people use them so widely.

Where this entry sits

Plants and Trees gathers ordinary and surprising details about how green things live, from the tallest forest giants down to the moss on a garden wall. Expect notes on flowers, seeds, roots, leaves, fungi, and the quiet tricks plants use to spread and survive. The full list sits on the Plants and Trees page, where every entry is listed in order.