Overview
- Tokyo’s review of about 800,000 trees over three meters found roughly 14,000 with decay, broken limbs, or other defects that raise fall risk.
- Staff carried out quick fixes for flagged trees, including felling, pruning, and restricting entry near hazards in parks, along roads, and on school grounds.
- Officials plan specialist diagnoses by certified tree doctors, phased replanting, and use of image-based AI to estimate fall risk and guide upkeep.
- Chiyoda Ward will remove four cherry trees in the Chidorigafuchi area, including two inside Chidorigafuchi Park, following its own inspection.
- The Maizuru Park review in Fukuoka, launched after an April 8 collapse of a 60–70‑year‑old cherry, found 48 trees needing action with 10 rated high risk, prompting access limits now and precision tests in May.