Spring Onions Re-Sprung

A little experiment with spring onions. The spring onion pictured below was cut off at ground level, rather than pulling out of the ground. And lo and behold, it has begun to re-grow. It is now several centimetres tall. Will it become a full size spring onion again? How many times will I be able to cut it and have it re-grow? Time will tell.

Spring onion re-growing