Common waterhemp
June 10, 2015
Amaranthus rudis L. Amaranthaceae (Amaranth family)
Life cycle
Erect summer annual.
Waterhemp seedling.
Leaves
As in pigweed species, cotyledons are eggshaped with a prominent midvein and reddish tinted undersides. First true leaves are lanceshaped with notched tips. Long, narrow leaves grow alternately and are smooth and shiny.
Waterhemlp lanceolate leaf.
Stems
Stems are smooth, erect and branching, and can grow up to 8 feet tall.
Waterhemp smooth stem.
Flowers and fruit
Small, greenish flowers are found on long, slender seedheads. Plants are dioceous, being either male or female. Male flowers have five petals, females have one or none. Both have short bracts. Seeds are small, round, black and shiny.
Waterhemp inflorescense.
Reproduction
Seeds.
Print a PDF of this page: Common waterhemp
Other Documents in this Series
You Might Also Be Interested In
-
Michigan Sea Grant approaches Great Lakes issues with a statewide outlook and a strong local focus
Published on August 23, 2021
-
MSU Extension to undertake three-year, $7 million vaccination education effort
Published on August 17, 2021
-
Is an internship right for you?
Published on July 6, 2022
-
Inspired and in-person: face-to-face programming returns for Michigan 4-H
Published on August 25, 2021
Accessibility Questions:
For questions about accessibility and/or if you need additional accommodations for a specific document, please send an email to ANR Communications & Marketing at anrcommunications@anr.msu.edu.