Consider the Treants

The prompt ping pong has come to a halt due to no fault on either end. We may resume it in the future, but I'm not making promises in the current state of things.

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In the Shadow of the Ancients 
by JasonEngle

Treants (or ents, if you want a Tolkien copyright, or tree-people if you think treants are just tree-ants) are plant people. It is important to remember this, because plants have a different subset of needs and traits that inform their societies.

They don't need agriculture, because their food is all around them. They do practice some forms of farming for pest control. Rot grubs are put in rotten bark to eat away the dead parts and retain the healthy growth. Bats and insect-eating birds are given roosting priorities to keep leaf-eating insects at bay.

They don't need housing - after all, being a giant walking tree leaves you with few predators to ward away, and being exposed to the sky and rain is sort of important. Their homes are their forests, which in turn define their family units - their groves. Treants are not born, but instead 'awaken' from old trees. When a tree is close to waking up, the grove moves close to protect it, and to ready the surrounding area for its first cumbersome steps.