Swamp Milkweed (Asclepias incarnata) Linnaeus, 1753

 

Synonyms: Acerates incarnata, Asclepias albiflora, Asclepias amoena, Asclepias maritime, Asclepias verecunda, rose milkweed, rose milkflower, swamp silkweed, White Indian hemp

 

 

Asclepias incarnata is found throughout the eastern and mid-western North America, with isolated populations in the Rocky Mountains (BONAP map). This species grows in damp soils in floodplains, swamps, blackland prairies, thickets, margins of marshes and fens, drainage ditches, etc. It is a perennial herb 100-150 cm in height, with lance-shaped oppositely arranged leaves. The purple or pink flowers are arranged in rounded umbels. Swamp Milkweed bloom in early to mid-summer. The fruit is a thin, rounded pod, ca. 12 cm long; the seeds are wind-dispersed. A. incarnata is a food plant for the caterpillars of Danaus plexippus.

 

		D50090 Swamp Milkweed (Asclepias incarnata) Bruce Peninsula Ontario, Canada Copyright © Michael Patrikeev All Rights Reserved
		D50092 Swamp Milkweed (Asclepias incarnata) Bruce Peninsula Ontario, Canada Copyright © Michael Patrikeev All Rights Reserved

 

		8385 Swamp Milkweed (Asclepias incarnata) Long Point, Ontario, Canada Copyright © Michael Patrikeev All Rights Reserved
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