Bamboo species that only flowers once a century currently in bloom in Belgium
Of the 20 seedlings of tiger bamboo variety planted as an experiment in 1987 Belgium Bokrijk Open-Air Museum, one grew better than the rest and have flowered now (this variety flowers once in 50-100 years)
Many experts then were sceptical about this variety surviving the harsh belgian winter. Today they are doing successful carbon sequestration (One hectare of bamboo sequesters 17 tonnes of CO₂ annually)
https://www.brusselstimes.com/2198517/bamboo-species-that-only-flowers-once-a-century-is-currently-in-bloom-in-belgium
(Moral of the story - Keep experimenting)