The majority of plants brought in for beekeeping and gardening remain exactly where they are planted; thus, they rarely receive any attention. Occasionally, however, a species that appears innocuous in a flower bed has very different ambitions when it comes to open space. One of the most obvious instances of that pattern in the world is the tall, late-blooming perennial tall goldenrod, which is native to North America. Japan has been observing the effects of this pattern throughout its countryside for more than a century.
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