![](http://www.alamy.com/thumbs/6/1F03C393-1CE5-4159-83C4-B609937AFD6E/E7BBHE.jpg)
giant knotweed, fallopia sachalinensis
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Photo credit: © Frank Teigler / Alamy / Afripics
License: Licensed
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Keywords: annual, bloom, blooming, blossom, blossoms, botany, caryophyllales, fallopia, flower, flowering, flowers, giant, herbaceous, knotweed, knotweeds, nature, plant, plants, polygonaceae, polygonoideae, sachalinensis, sakhalin, weed, weeds, weedy, white