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knotweed

   Also found in: Medical, Wikipedia 0.01 sec.
knot·weed  (ntwd)
n.
Any of several plants of the genus Polygonum, with jointed stems and inconspicuous flowers.

knotweed [ˈnɒtˌwiːd]
n
(Life Sciences & Allied Applications / Plants) any of several polygonaceous plants of the genus Polygonum, having small flowers and jointed stems


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Japanese Knotweed is hard to kill, can grow from tiny fragments and once anchored can rip through paving and concrete.
has shown that Aphalara itadori is the best candidate to help control Japanese knotweed in Britain.
Japanese Knotweed is top of the mite's menu, although it seems the creature is partial to a number of similar plants, too.
 
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