Nova Scotia Fisheries and Aquaculture banner

Redroot Pigweed Ambrosia artemisiifolia L.
Annual
Reproducing by seed

Cotyledons
Long, narrow and pointed
Purplish color on underside

Roots
Taproot

Stem
Erect, hairy, branched
Base of stem is red in
young plants

True Leaves
Alternate
First true leaves often
have notched tips
Pointed, oval
Prominent white veins
Long stalked, wavy entire margin

Flowers
Green, no petals
Densely clustered
at ends of branches

Habitat
Cultivated fields, waste areas

Note
Root is usually reddish-pink

Click on image to enlarge

Redroot Pigweed 1

Redroot Pigweed 2

Redroot Pigweed 3

  Last Update: May 1, 2007