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