Species Synonym(s): None
Common Name(s): None
Family: Polygonaceae (Buckwheat Family)
Family Synonym(s): None
Native Range (GRIN):
Selected images from Bugwood.org
Tom Heutte, USDA Forest Service
Tom Heutte, USDA Forest Service
Jan Samanek, Phytosanitary Administration
Jan Samanek, Phytosanitary Administration
Jan Samanek, Phytosanitary Administration
Leslie J. Mehrhoff, University of Connecticut
Jan Samanek, Phytosanitary Administration
Leslie J. Mehrhoff, University of Connecticut
Landscape Ornamental Use (GRIN): Yes
All Uses (GRIN): Ornamental, Fodder, Potential as biomass for energy generation, Potential seed contaminant
Summary: giant knotweed (Reynoutria sachalinensis) is a Terrestrial/Wetland species.
Mid-Atlantic Coastal Plain regions
Mid-Atlantic Piedmont and Mountain regions
Northern parts of PA and NJ (and beyond)
OBL (Obligate wetland): Almost always occurs in wetlands (estimated probability > 99%) under natural conditions
FACW (Facultative wetland): Usually occurs in wetlands (estimated probability 67% - 99%), but occasionally found in non-wetlands
FAC (Facultative): Equally likely to occur in wetlands (estimated probability 34% - 66%) or non-wetlands
FACU (Facultative upland): Usually occur in non-wetlands (estimated probability 67% - 99%), but occasionally found in wetlands (estimated probability 1% - 33%)
UPL (Obligate upland): Occur almost always (estimated probability > 99%) in non-wetlands under natural conditions
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Caryophyllidae |
| Order: Polygonales |
| Family: Polygonaceae |
| Genus: Reynoutria |
| Subject: Reynoutria sachalinensis F. Schmidt ex Maxim. |