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Asclepias speciosa is a milky-sapped perennial plant in the dogbane family (Apocynaceae), known commonly as the showy milkweed and is found in the western half of North America. [ 1 ] [ 2 ] Description
Asclepias is a genus of herbaceous, perennial, flowering plants known as milkweeds, named for their latex, a milky substance containing cardiac glycosides termed cardenolides, exuded where cells are damaged.
Asclepias syriaca, commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant. [ 2 ] [ 3 ] It is native to southern Canada and much of the United States east of the Rocky Mountains, excluding the drier parts of the prairies. [ 4 ]
The National Wildlife Federation recommends the following three species that will work in most regions of the U.S.: Common milkweed (Asclepias syriaca), swamp milkweed (Asclepias incarnata), and ...
Similar conditions exist for showy milkweed (A. speciosa) in Michigan and for green antelope horn milkweed (A. viridis), where it grows in the Southern Great Plains and the Western United States. [77] [234] Further, the seeds of A. syriaca and some other milkweeds need periods of cold treatment (cold stratification) before they will germinate ...
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Similar conditions exist for showy milkweed (A. speciosa) in Michigan and for green antelopehorn milkweed (A. viridis) where it grows in the southern Great Plains and the western United States. [47] In addition, the seeds of A. syriaca and some other milkweeds need periods of cold treatment (cold stratification) before they will germinate. [48]
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. [ 3 ] [ 4 ] It grows in damp through wet soils and also is cultivated as a garden plant for its flowers , which attract butterflies and other pollinators with nectar .