Fauna
Plant · GBIF taxon 8577467

Rough-fruit Amaranth

Amaranthus tuberculatus

Also known as Rough-Fruited Water-Hemp, Tall Waterhemp, Common Waterhemp

Rough-fruit amaranth grows rapidly in agricultural fields and river floodplains across much of North America. It is dioecious, meaning male and female flowers grow on separate individual plants. A single female plant can produce over one million tiny seeds, helping populations spread quickly and adapt to intensive agricultural management.

AnnualBroadleafFast-Growing
Rough-fruit Amaranth reference1 / 7
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
  • Autotrophic (Photosynthetic)
Predators
  • Insects
  • Granivorous Birds
  • Small Mammals
ThreatsHerbicide resistance management, agricultural weed control
HabitatsAgricultural fields, wetlands, riverbanks, disturbed soil
Life span1 year (Annual)
  1. OrderCaryophyllales
  2. FamilyAmaranthaceae
  3. GenusAmaranthus
  4. SpeciesAmaranthus tuberculatus
Range data is not available yet.
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Field Identification: Look for smooth, hairless stems to distinguish it from redroot pigweed.
  • Sex Determination: Examine flower heads to identify distinct male and female plants.
Help improve the field guideSomething wrong?

Report a name, category, or profile issue for review.

Checking your Fauna account…