The idea that trees communicate and exchange nutrients with each other via underground networks of fungi has captured the popular imagination, helped along by the incredibly catchy metaphor of a “wood-wide web”. Suzanne Simard, a Professor of Forest Ecology at the University of British Columbia, has developed this idea more than anyone else and happily talks of mother trees nurturing their offspring. This idea has not been without controversy in scientific circles, if only for its anthropomorphic language. I was both sceptical and curious about her ideas. High time, therefore, to give her scientific memoir Finding the Mother Tree a close reading.