Cherry‑blossom risk alert

Tokyo’s cherry-blossom season came with a hazard this year: on April 2, two sakura trees collapsed in Tokyo, including one at Chidorigafuchi Greenway beside the Imperial Palace moat and one at Kinuta Park. Nobody was hurt in those two falls, but both sites are major blossom-viewing spots with heavy foot traffic. (apnews.com) The Kinuta Park tree was not a small branch failure. Officials said it was about 18 meters tall and 2.5 meters in diameter, and it was believed to be more than 60 years old. (taipeitimes.com) This is not a one-off spring accident. Tokyo park officials said 85 trees fell in Tokyo parks in 2025 and three people were injured, with many of the fallen trees identified as cherry trees. (abcnews.com) The reason keeps coming back to one variety: Somei Yoshino, the pale pink cherry tree that dominates famous hanami spots in Tokyo. Many of those trees were planted during Japan’s postwar building boom in the 1960s, so a huge share of the city’s most photographed sakura are aging at the same time. (apnews.com) You can see that age bulge in Ueno Park, one of Tokyo’s best-known blossom sites. The Asahi Shimbun reported that most of its roughly 700 cherry trees are now 50 to 70 years old, including about 300 Somei Yoshino trees. (asahi.com) That helps explain why the risk shows up exactly when crowds are largest. The Japan Meteorological Agency said Tokyo’s 2026 cherry blossoms opened on March 19, and full bloom usually pulls dense lines of walkers, picnickers, and photographers directly under older branches. (data.jma.go.jp) Parks are already changing rules around blossom season because crowding and safety now overlap. Shinjuku Gyoen’s official 2026 notice says running was prohibited from March 20 to April 2 to protect visitor safety during the cherry-blossom period. (env.go.jp) Chidorigafuchi did not shut its event after the April 2 fall, but the local tourism association said safety had to be confirmed first before illumination continued as scheduled. That is a good picture of the new reality: the flowers are still the attraction, but the trees now need inspections like aging infrastructure. (visit-chiyoda.tokyo) For travelers, the practical change is simple. If a park has cones, taped-off ground, support poles, or staff redirecting foot traffic, that is not crowd theater; Tokyo officials are dealing with real failures in real trees during the busiest weeks of the year. (apnews.com) Japan is not losing cherry blossoms overnight. Japan Mint is still running major 2026 blossom viewings in Osaka, Hiroshima, and Saitama, but the Tokyo story is a reminder that a spring tradition built around trees planted decades ago now depends on pruning, replacement, and sometimes keeping people a few meters farther back. (mint.go.jp)