Fallopia japonica (Japanese knotweed)
Other names: Giant knotweed, Polygonum cuspidatum, Polygonum reynoutria, Reynoutria japonica, False bamboo, Mexican bamboo, Himalayan fleece vine, Monkeyweed, Monkey fungus, Hancock's curse, American bamboo
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Species
F. japonica is a vigorous, upright to climbing perennial with hollow stems bearing broadly ovate to heart-shaped, mid-green leaves and erect racemes of small, cream or white flowers in late summer and early autumn.
Season of interest
Flower | ||||
|---|---|---|---|---|
| Spring | Summer | Autumn | Winter | |
| Flower | ||||
Foliage | ||||
| Spring | Summer | Autumn | Winter | |
| Foliage | ||||
Height and spread
Height and spread | |||
|---|---|---|---|
| Size | Max height | Max spread | To maturity |
| 4 m | 1 m | 5-10 years | |
| 13 ft | 3 ft | 5-10 years | |
Where to grow
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