Blue Milkweed Plant. Milkweed flowers bloom from june to. Tweedia caerulea blue flowered milkweed this twining perennial from brazil and uruguay grows 2 3 feet on its own and can reach to 10 feet with support.
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. Usda hardiness zones 10 11 lows 1 1 c or 30 f annual in colder zones with overwintering. Doing so they ingest toxic milkweed chemicals that in turn make the insect toxic to its predators.
Monarchs also lay their eggs on the plant and their larvae feed on the foliage.
Milkweed flowers bloom from june to. It is a member of the milkweed family and is the only milkweed variety with blue flowers. Blue milkweed star of the argentine southern star oxypetalum caeruleum is old botanical name plant specs. Doing so they ingest toxic milkweed chemicals that in turn make the insect toxic to its predators.