Japanese knotweed
Smartweed-Buckwheat Family
Fallopia japonica
Polygonaceae
--more--
common name
Japanese knotweed
accepted scientific name
Fallopia japonica
(Houtt.) Ronse Decr.
rules for finding collection records
Fallopia japonica (470)
Pleuropterus zuccarinii (0)
Polygonum cuspidatum (1088)
Reynoutria japonica (147)
family name
Polygonaceae
| Image Author: ©2007 "MdE"
Image License: CC BY-SA
Image Source
Category: Woody Vines
Flowers: Five petals
Petal colors: 
Flower size is about 0.33 inches
Leaf: Alternate
Plant Observed 3rd week of April thru end of October
Not Native. Invasive in VT. Noxious weed in MT, OR.
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