[Cerium]

For bamboo you see the fast part, but not the slow part. The shoots are prepared over a number of months where all the nodes are made underground. Then when it is ready the space between the nodes is added causing the very fast telescoping action.

[warent]

Your description makes bamboo sound like some kind of fascinating alien technology/ organism, I love it.

[zinekeller]

Japan agrees! (or at least their folktale story does) [1]

1: https://en.m.wikipedia.org/wiki/The_Tale_of_the_Bamboo_Cutte...