Amaranthus cannabinus
PlantsFamily: Amaranthaceae · Genus: Amaranthus

Britton, N.L., and A. Brown. · public_domain
About
Amaranthus cannabinus is a plant species also known as salt marsh water hemp or salt marsh pigweed. It is a herbaceous perennial found in most of the eastern United States. It grows from 1 to 3 m in height. It is often mistaken for Amaranthus australis.
Summary from Wikipedia
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Growing details and traits for Amaranthus cannabinus in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.