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What it argues
Suzanne Simard is the forest ecologist who discovered that trees communicate and share resources through underground mycorrhizal fungal networks — the research that gave rise to the concept of the "mother tree" and, at several removes, Peter Wohlleben's popular writing on the subject. Finding the Mother Tree is simultaneously a scientific autobiography and a first-person account of the research that reshaped our understanding of forest ecosystems. It is a more serious and personal book than Wohlleben's, and more deeply grounded in the difficulty of doing science inside hostile institutions.
Simard grew up in a logging family in British Columbia and spent her early career trying to reconcile her love of forests with the economics of industrial forestry. Her research began as a practical question — why did planted forests fail when neighboring natural forests thrived? — and led her to discover that the mycorrhizal networks connecting tree roots were not just passive plumbing but active conduits for carbon, water, and defense signals. The industry resisted her findings, her supervisors dismissed them, and her papers faced institutional pushback that she documents in detail.
What it gets right
- 1.
Mother trees — the largest, oldest trees in a forest — are hubs in the mycorrhizal network and are disproportionately connected to younger trees, including their own offspring.
- 2.
Simard's key experiment used radioactive carbon isotopes to trace carbon moving through mycorrhizal networks between birch and fir trees, demonstrating bidirectional flow.
- 3.
Industrial clear-cutting that removes mother trees damages the fungal network in ways that impair the regeneration of the entire forest community, not just the felled trees.
What it covers
Who wrote it
Suzanne Simard is a professor of forest ecology at the University of British Columbia and one of the world's leading researchers on mycorrhizal networks and forest communication. Her 1997 paper in Nature on carbon transfer between trees through fungal networks was a landmark in forest ecology. She is the founder of the Mother Tree Project, a large-scale research initiative studying how retention of large old trees affects forest regeneration. Finding the Mother Tree is her first book for general audiences.
