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Japanese knotweed [Polygonum cuspidatum]

Flower       Flower       Flower      

Common Name: Japanese knotweed
Scientic Name: Polygonum cuspidatum
Colors: Yellow
Months Appearing: September

Invasive, non-native plant.  Difficult to eradicate. Also called Fallopia japanica.  Common name Japanese bamboo in Michigan.

3-10 feet tall. Shrub.  Fast growing. Hollow, bamboo-like stems in dense stands.

Flower in spikes up to 1 ft high. Pointed superiorly.1/8 inch in diameter. 5 petals.

Partially wooded ares. Roadsides. Behind St Pauls Church, Big Rapids, Mi, September 5 0362, 0361, 0363