Talk:Dryad/@comment-5750990-20180610191939/@comment-34666853-20180611001448

AFAIK, treants are awakened trees in almost every iteration of fantasy fiction in games. If we consider that this one is inspired by Dungeons & Dragons, then:

"Treants are awakened trees... A tree destined to become a treant meditates through a long cycle of seasons, living normally for decades or centuries before realizing its potential. Trees that awaken only do so under special circumstances in places steeped with nature's magic."

- Dungeons & Dragons, Monster Manual.

As for the original question, no I don't think so, although it would be cool as hell. Here's the thing, a dryad has an ability called [Tree Stride]. As per D&D Monster Manual, a dryad can enter a living tree and appear on to another tree farther away. However, a dryad apparently cannot normally [Tree Stride] to a treant.

"Tree Stride is meant to work with trees that aren't plant creatures. That said, a DM could rule otherwise and break nothing. "

-Jeremy Crawford, lead rules designer of Dungeons & Dragons, on twitter.

...So I think there's a mutual exclusivity to the entire process. If a dryad cannot [Tree Stride] to a treant, then a treant couldn't probably host a dryad and a tree that already hosts a dryad cannot become a treant.