Waterhemp, Common, Amaranthus Rudis L.

Life Cycle

Annual.

Propagation

Both male and female plants. Female plants will produce seed for reproduction.

Distinguishing Features

Often confused with red-root or green pigweed at early stages of growth. It is distinguished by its narrow leaves, wavy leaf margins and near hairless leaves and stems with a "smooth to the touch" feel. At maturity, waterhemp is considerable taller than other pigweeds ranging anywhere from 1.5-2.5 m in height. It will be very tall and narrow in appearance with stem colours ranging from green to red/purple.

Historical information

A member of the pigweed familly, but not native to Ontario. Common waterhemp was first detected in Lambton County in 2002. Tall waterhemp (Amaranthus turbriculatus), a close relative has been in documented in Ontario since the late 1800's and can be found mainly along waterways and beaches.


Figure #10.


Figure #11.


Figure #2.


Figure #3.


Figure #4.


Figure #5.


Figure #6.


Figure #7.


Figure #8.


Figure #9.