In 1900, North American tall goldenrod was introduced to Japan for gardens and honey production, but it escaped cultivation and overran native grasslands nationwide

Initially brought to Japan around 1900 for aesthetics and bee forage, tall goldenrod has become a significant ecological contender post-World War II. It aggressively proliferates, overshadowing native plant species through rapid expansion and chemical warfare. Nonetheless, its flowering season offers vital support for honeybees and various pollinators during the winter months. Observations indicate that Japanese populations are evolving to become even more dominant in their new environment.
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