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Sown outdoors after frost, a plant will flower and produce seed in the third year. It is difficult to transplant once established, as it has a deep, woody taproot. [10] [11] 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.
Seed readily germinates, and mature flowering plants can be grown in as little as three months. Plants can be successfully grown in containers as small as a quart. This species is tolerant of excess watering and lack of watering, in which substrate has not been seen to be an important factor in growth.
Asclepias perennis, also known as aquatic milkweed or white swamp milkweed (not to be confused with swamp milkweed; Asclepias incarnata), is a North American species of milkweed that is found throughout the Coastal Plain from eastern Texas to southern South Carolina, northward along the Mississippi River, and into the Ohio Valley of Illinois, Indiana, and Kentucky.
Asclepias viridis is a species of milkweed, a plant in the dogbane family known by the common names green milkweed, green antelopehorn and spider milkweed. [2] [3] [4] The Latin word viridis means green. The plant is native to the midwestern, south central and southeastern United States, as well as to the southeastern portion of the western ...
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 .
It is a perennial plant growing to 0.3–0.9 m (1–3 ft) tall, with clustered greenish-yellow flowers with maroon highlights. It blooms from April through June. Antelope horns is a common milkweed in Central Texas. It gets its name from the follicles (seed pods) that resemble the horns of antelope.
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 ]
Horsetail milkweed. Growing to 1.2 metres (4 feet) in height, short branches support leaves ranging from 2–12.5 centimeters (1–5 inches) in length. Blooming from May to September, the umbel is 2–3 cm (3 ⁄ 4 – 1 + 1 ⁄ 4 in) wide, with individual flowers up to 1.5 cm (1 ⁄ 2 in) across; each has five petals and five sepals.