Not the roots in question, the little clone type thing popping up on the right side. I know some plants grow through rhizomes and can pop out anywhere but I’ve never seen this before on a cannabis plant.
It’s either spontaneous generation from the roots or I broke a little branch and it survived.
Can’t say I’ve seen that on cannabis but it’s called a “sucker” on fruit trees and plants.
I would however put some fresh soil over your exposed roots. Just sayin…
Yes it doesn’t look young more like a stunted one that has been growing for a bit. If you decide not to keep it going you can autopsy your way down to see if it really is a sucker. That’s why poplar or aspen Forests depending on where you are is one of the largest organisms around.