A certain type of bamboo actually holds the world record as the fastest growing plant ever. 
This bamboo was able to grow as fast as 35 inches in a single day! This translates into nearly 1.5 inches per hour. You could literally sit there and see the bamboo growing before your eyes. If that is put into speed, it comes out at 0.00002 miles per hour.
Bamboo is also able to grow very tall, with the tallest ever recorded in the United States of America at 65-98 feet and 130 feet in Europe. 
Due to how fast bamboo grows, it is considered one of the most renewable plants on earth.
As soon as the bamboo is harvested, it just starts growing again, making it an ideal material for all sorts of uses.