Wohlleben draws on the scientific literature and his life's work as a forester to talk about what's going on with trees. Trying to take the tree's point of view of those facts does lead him to anthropomorphize, but that mostly shows up in adjectives: he'll call a tree's behavior "loutish" or describe salt spray as "painful".
The 36 short chapters are perfect for reading at bedtime, then turning out the lights and imagining what it is like to be a tree.