Swamp milkweed
Plant
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Asclepias incarnata, the swamp milkweed, rose milkweed, rose milkflower, swamp silkweed, or white Indian hemp, is a herbaceous perennial plant species native to North America. Wikipedia
Scientific name: Asclepias incarnata
Soil type: wet clay soil
Family: Apocynaceae
Genus: Asclepias
Kingdom: Plantae
Order: Gentianales