Based on the 2015 book of the same title, The Hidden Life of Trees is a documentary both simple and startling.

Perhaps in tribute to its subject matter, it is slow in spots. That may just be a way to give us more of a sense of tree-time, rather than human-time.

"The Hidden Life of Trees" uses the sensorial capacities of cinema to thrillingly visualize Wohlleben's observations.

Rigorous scientific research by world-class botanists has proven, with all the required boxes ticked, that plants are sentient beings with sensory organs and emotions. Trees are Ents. Humans just aren't fluent in Entish yet.