A black bamboo plant in a Toyoda City natural observation forest garden flowered this week, an event that occurs roughly every 120 years [1].
This rare botanical occurrence is significant because black bamboo typically dies after flowering. The event provides a rare glimpse into the life cycle of the species and attracts attention from both residents and botanical experts.
Toyoiro Toyichi, the owner of the bamboo, noticed the bloom and sought expert guidance. He said that after researching the plant online, he found that black bamboo flowers once every 120 years and expressed a desire to hear from botanists familiar with the phenomenon [1].
Kawai Hiroto, the deputy director of the Toyoda City Natural Observation Forest, confirmed the identity of the plant. He said it was undoubtedly a black bamboo flower and noted that the previous record of such a bloom was around 1908 [1].
Local residents have also observed the event. One resident in her 80s said she was surprised when she noticed the flowers blooming all at once on May 13 [2].
While this specific bloom occurred in Toyoda City, other reports have mentioned similar events in different regions. However, the 120-year cycle remains the primary characteristic of this species [1, 2].
Separate from the biological event, market trends show that the wholesale price of bamboo shoots has increased to 1.5 times higher than the prices seen in 2024 [4].
“The previous record of such a bloom was around 1908.”
The flowering of black bamboo is a terminal event for the individual plant, meaning the current specimen will likely die following this bloom. Because the cycle spans over a century, these events are rare benchmarks for botanists to study the long-term reproductive patterns of the species in the wild.
