system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can bamboo grow up to 3ft per day whereas other plants can get no where near as close to this speed?
gpt
Bamboo grow in a different manner to normal plants. Rather than growth through mitosis (splitting and division of cells) they already have present a number of cells and these cells stretch and elongate these cells. They become turgid (full of water) and stretch. 

Tldr;

They don't grow faster. They fill with water and stretch into their adult shape fast.