Tumble pigweed

Amaranthus albus L. Amaranthaceae (Amaranth family)

Life cycle

Bushy-branched summer annual.

tumble pigweed seedling
Tumble pigweed seedling.


Alternate, oval to spatula-shaped, light green leaves have wavy margins and notched leaf tips.

tumble pigweed leaf tumble pigweed foliage and flowers
Tumble pigweed leaf (left), and foliage and flowers (right).


Mostly erect and usually hairless, pale green to whitish stems with multiple branches create a bushy appearance. Stems, up to 4 feet tall, break off at the soil surface when mature and tumble with the wind.

tumble pigweed whitish stems
Whitish stems of tumble pigweed.

Flowers and fruit

Small, greenish flowers are found in dense clusters in the leaf axils. Flowers have long bracts — two to four times the length of the sepals — and yield small, round, shiny black seeds.

tumble pigweed flowers
Tumble pigweed flowers.



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