How fast can bamboo grow?

The answer

Certain species of bamboo, particularly Moso bamboo (Phyllostachys edulis), can grow at rates exceeding 35 inches (91 centimeters) per day, making bamboo the fastest-growing plant on Earth. This translates to roughly 1.5 inches per hour, a rate fast enough to observe with the naked eye. Bamboo achieves this speed because all of its cells elongate simultaneously along the entire shoot, rather than growing only from the tip like most plants. A full-height bamboo culm can reach its maximum height of up to 90 feet in just 60 to 90 days, after which it spends several years hardening its cell walls with lignin and silica.