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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]
A monarch butterfly on swamp milkweed Asclepias syriaca seed pods, upper image from August and lower from December Milkweed sprout, a few days after sowing Chemical structure of oleandrin, one of the cardiac glycosides. Members of the genus produce some of the most complex flowers in the plant kingdom, comparable to orchids in complexity.
A. tuberosa is a larval food plant of the queen and monarch butterflies, as well as the dogbane tiger moth, milkweed tussock moth, and the unexpected cycnia. [3] [12] Because of its rough leaves and trichomes, it is not a preferred host plant of the monarch butterfly but caterpillars can be reared on it successfully.
Both the milkweed tussock and the monarch caterpillars eat the cardiac glycoside-laden milky sap of milkweed and have evolved mechanisms to retain those toxins in their bodies after metamorphosing ...
Common names include sand vine, honeyvine, honeyvine milkweed, bluevine milkweed, climbing milkweed, and smooth swallow-wort. [2] The root system of C. laeve can cause it to be very difficult to eradicate, especially in agricultural fields. [3] It is a larval food of monarch butterflies [4] and milkweed tussock moth larvae. [5]
While tropical milkweed may effectively sustain monarch larvae, the perennial growth of the plant takes ill effect on the monarchs' migratory patterns and may have other physiological effects. [8] Use of the tropical milkweed in gardens has disrupted monarch migrations notably in California, Texas, Florida, and South Carolina. [ 9 ]
Growing milkweed from seed is one of the easiest ways to help declining monarch butterflies. In December 2024, the U.S. Fish and Wildlife Service proposed monarch butterflies, whose numbers in the ...
Euchaetes egle, the milkweed tiger moth or milkweed tussock moth, is a moth in the family Erebidae and the tribe Arctiini, the tiger moths. The species was first described by Dru Drury in 1773. It is a common mid- through late summer feeder on milkweeds and dogbane .