Journal
Field documentation, research, and insights on tree culture, diagnosis, gardens, and urban trees.
Cornerstone article
Tree Diagnosis
A sonic tomograph does not photograph the inside of a tree. It measures one thing only: how long a stress wave takes to travel from one sensor to another. Everything you see…
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Tree Diagnosis
A sonic tomograph does not photograph the inside of a tree. It measures one thing only: how long a stress…
Tree Diagnosis
Hiroshima’s survivor trees — hibakujumoku (被爆樹木), the trees that lived through the atomic bombing of 6 August 1945 — still lean toward…
Tree Diagnosis
A resistograph does not show you the inside of a tree. It records resistance along a single line — the…
Tree Diagnosis
Climbing a temple's sacred trees with ArborSonic 3D: what sonic tomography plus ropework revealed inside — a real diagnostic case…
Tree Diagnosis
Japan planted millions of trees after WWII. They are aging out together — falling. Inside Japan's street tree crisis, with…
Tree Diagnosis
How Japanese arborists read decay with eyes, hands, plus a mallet — field diagnostic methods that work before any machine…
Tree Diagnosis
VTA meets Japan's jumoku-i system: a certified tree doctor compares Western and Japanese tree diagnosis — strengths, blind spots, and…
Tree Diagnosis
What is a jumoku-i? Japan's certified tree doctor system explained — training, exams, and how it differs from ISA arborist…