Knotweed Complex

( Reynoutria japonica+ )

Fleshy new shoots are pointed at the tip and resemble asparagus shoots
Hollow bamboo-like stem
Large, heart-shaped leaves
Greenish to creamy-white small flowers grouped in plume-like clusters at the end of the stems
Height 15 to 19 feet

[Not a valid template]

Type	Information
Toxicity	Non-toxic.
Control	Repeated cutting, hand pulling, herbicides and grazing. Contact your County Weed District or local Applicator for more information.
Habitat	Along waterways, landscaped yards, disturbed soils, forest edges, vacant lots and right of ways.
Root	Extensive root system.
Leaf Shape	Broad, heart-shaped.
Lifespan	Perennial; two years or longer.
Priority 1B Weed	Limited presence in Montana.
Similar Looking Plants	Buddleja (butterfly bush), knotgrass, Russian vine, giant and hybrid knotweeds.
Important Information	Found at old home sites where it was planted as an ornamental. Plants are not frost tolerant and die back at the end of each season. They can cause serious damage to structures with growth.