Growing up in the Midwest, USA I have heard of being able to hear corn grow on a quiet night. I believe I may have actually experienced this at one time while waiting for some co-workers in the middle of a cornfield on a calm, hot and humid July day. There was a very faint sound like broken glass rubbing together. There is actually some research to back up acoustics associated with corn growing:
"Material breakage is a lot like a microscopic earthquake: the sudden release of internal stresses sends sound waves radiating in every direction," Cook explained. "We're using special sensors called piezoelectric contact microphones to monitor the sounds emitted by corn stalks just before failure. This helps us understand the failure process more clearly."
Source: Can you hear corn grow? Yes!
There are other plants that grow just as fast or faster than corn, but I've never heard of actually being able to hear of any other type of plant grow. Are there any other plants that can be heard while they are growing?