Trees are fascinating. I often think about what they would do, if they would have minds like we do. Could they form an own race? Would they organize in states like we do? Could they go in war? Maybe even with mankind?
So always this question came up in my head: Would trees after all be capable of moving? I don't mean expanding like forests in real life do. I think about being mobile. A mobility needed for fighting a war against other trees (men, robots, etc...). Expanding is too slow for this use.
Trees in my imagination have (beside the consciousness, intelligence, communicative ability) a kind of muscles. An average tree (stem diam. ~0.5m) is able to move their stem by ca. 5 degrees in all directions, large branches (diam. ~15cm) by ca. 10 deg in all directions and small branches (diam. ~5cm) by ca. 25 deg.
I think about
Tools (eg catapults) which can be built by described trees.
Teamwork. Maybe your technique requires hundreds of trees of with slightly different abilities to move just one tree. Just remember, that a tree should be able to move in hostile territory, where no rooted trees of our species are.
Trees need supplies (water, nutrients..., but why not trees, who have storages, filled in their rooted time..)
Trees should still live at their destination!
You don't have to explain how they came to be.
I'm interested in many different techniques. (Birch trees use this way of moving, oak this way....)