Amaranthus albus is an annual species of flowering plant native to the Americas. Its common names include common tumbleweed, tumble pigweed, tumbleweed, prostrate pigweed, pigweed amaranth, white amaranth and white pigweed.
Amaranthus albus is an annual herb growing up to tall, forming many branches. Larger specimens turn into tumbleweeds when they die and dry out. The plant creates small, greenish flowers in clumps in the axils of the leaves. Male and female flowers are mixed together in the same clump.
It is native to the tropical Americas, but is a widespread introduced species in other places, including Europe, Africa, and Australia.
In Cambodia, the leaves of the plant (which is known as in the Khmer language) are used as pig feed, and are sometimes cooked and eaten by people.