Asclepias incarnata, (Swamp Milkweed). Finally, Milkweed may not bloom if the plant is stressed, such as by drought or excessive heat. Milkweed prefers full sun, rich loamy soil, and fairly moist conditions, but this robust plant can tolerate a variety of situations. You can plant them closer and then thin the plants as they grow in, or, plant Swamp Milkweed and its cultivars between 30” and 36” apart. Full sun is best and some shade is tolerated, though blooming time … It is about one to two feet tall, with glossy, lanceolate leaves that are arranged spirally up the length of the stem. In many nurseries, the most readily available species of milkweed happens is a popular but non-native one. Tropical milkweed (Asclepias curassavica) is a showstopper.It produces bunches of orange, yellow, and red tubular blooms for months. Information online is dicey as to what this species of milkweed actually wants. Lifted plants may not bloom the first year, but expect plants started from seed to bloom the first year. Monarch butterflies lay their eggs on just one type of plant, and that’s milkweed (genus Asclepias). Butterfly weed is native to the prairies of the Midwestern United States. In addition, swamp milkweed is an important food source (albeit somewhat less important than upland species of Asclepias) for the larval stage of Monarch butterflies.Genus name honors the Greek god Asklepios the god of medicine.Specific epithet means flesh-colored. Best Time to See. However it has naturalized in the Southeastern U.S. Science is discovering that its long bloom time may have some detrimental effects on monarch migration and possibly be a … Easily grown in medium to wet soils in full sun. June through August is the bloom time for milkweed [Asclepias syriaca]. Noteworthy Characteristics. Flowers are followed by attractive seed pods (to 4" long) which split open when ripe releasing silky-haired seeds easily carried by the wind. The long, oblong leaves are light green and grow to about 8 inches long. You can also keep them in pots. Planting milkweed is the most effective way to help because it is the only plant that sustains a monarch through each of its life stages. Allow the collected seeds to dry for a week or two, then store your milkweed seed pods in the garage, a refrigerator, or a cool dry place indoors. Planting Time: Milkweed plants can be planted in spring or fall. Bloom Time: Jun - Jul Light: Full sun Soils: Average Specialty Uses: Butterfly, Cut Flower, Medicinal, Tea, Landscaping Price(s): Packet: $3.00; Ounce: $17.00; Pound: $210.00; Images: Item Information Butterfly Milkweed is a perennial plant with a deep root system. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. The showy milkweed (Asclepias speciosa), native to western North America, is both a home to the milkweed beetle and a vacation layover for the monarch butterfly.This flowering plant is a hairy, erect perennial. Leave some plants uncut if you want to harvest milkweed seeds in fall. Deep pink petals with white centers bloom in 2” wide clusters. The stems and lea… Bloom time: May-Sept Prairie milkweed Asclepias sullivantii Number of counties where 7 occurrence has been documented: Habitat, part of state where Most common it most occurs: northeast and north central prairie Bloom time: Jun-Aug Common milkweed Asclepias syriaca Number of counties where 8 occurrence has been documented: Some species grow exclusively in specific regions while others will thrive in jus… Examine your growing conditions. Flowers are very attractive to butterflies as a nectar source. Plants usually have a taproot with the root crown producing one to six or more stems each growing season. It can be an aggressive weed … Soulmate Swamp Milkweed (Asclepias incarnata Soulmate) is one of the top perennials for attracting butterflies to your garden. Many have adapted to different regions of the country and a wide range of climates and terrains, from deserts and rocky areas to marshes and open prairies. After a long-bloom that can last much of the summer, seed pods will form that open in the fall, starting the cycle anew. Asclepias syriaca, commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant.It is in the genus Asclepias, the milkweeds.This species is native to southern Canada and of much of the conterminous eastern U.S., east of the Rocky Mountains, excluding the drier parts of the prairies. 3, 1 gallon size plants bloom for several months 36 '' across unfortunately, milkweed … common! In these parts has fuzzy leaves and an odd greenish-white bloom and can stand two-feet tall fresh! 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