Do vines grow?

[Nerdlin Geeksly]

Like if I were to leave 1 block of vines on a tree or place 1 block on a wall, would that 1 vine grow longer over time?

[Grummsh]

Im 100% sure the ones that you pick up and place somewhere else will never grow. As to ones you leave on a tree im not sure but i think they will not grow either.

[LadyWYT]

I've never seen vines grow--either ones you break and place, or ones you leave alone. I also don't believe new ones will spawn on newly matured trees. What I do know for sure is that if you don't break them by hand and pick them up before cutting down the tree/shearing the leaves, then they will disappear without dropping anything.

It is something I would expect to see changed in a later update though.