species 95,351 observations

Japanese Knotweed

Reynoutria japonica

Field notes

Supports All

89 native animals
supported in the US

Plant eaters Animals that feed on it Mallard, Common Raven, Eurasian Jackdaw, Redpoll 9
Flower visitors Pollinators and other flower visitors Common Eastern Bumble Bee, Monarch, Northern Paper Wasp, Fraternal Potter Wasp 80

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Key traits

Layer: Herbaceous plants
Light: Full sun
Moisture: Moist Wet
Habit: Arching
Plant type: Edible Herbaceous perennial Weed

From NC State Extension.