Tumble pigweed – Amaranthus albus - Plant & Pest Diagnostics

Tumble pigweed – Amaranthus albus

Amaranthus albus L.

Amaranthaceae (Amaranth family)

MI Status

Native

Life cycle

Bushy-branched summer annual.

Leaves

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

Stems

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.

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.

Reproduction

Seeds.

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Plant & Pest Diagnostics