Planticist
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Japanese Knotweed
Reynoutria japonica
Outdoor Plant
Scientific Name History
Current accepted name: Reynoutria japonica
Previously or alternatively classified as:
  • Fallopia japonica
  • Polygonum cuspidatum
How to identify it
Bamboo-like hollow jointed canes with broad leaves and cream flower sprays
Growing characteristics
perennial · tall rhizomatous herbaceous
Outdoor care and troubleshooting are not yet part of the Planticist diagnostic library.
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