Milkweed Annual Or Perennial. Here in santa cruz tropical milkweed is an annual it dies back in the winter on its own. And it doesn t usually come back until early april or later unless i have cuttings in the greenhouse.
It is native to north america and reproduces primarily from seed. Blooming from late spring into summer these perennials with sprays of small yellow orange or red orange flowers are striking in their beauty. Whorled milkweed can survive in partial shade whereas other milkweed species need full sun to produce sufficient blooms.
They are named for this sap.
Common milkweed asclepias syriaca is a native herbaceous perennial whose main virtue is its appeal to butterflies especially the monarch which deposits its eggs on the milkweed when the caterpillars hatch they feed on the leaves of milkweed. Curassavica also referred to as butterfly weed bloodflower or mexican milkweed. Whorled milkweed can survive in partial shade whereas other milkweed species need full sun to produce sufficient blooms. Hairy balls in full glory.