While the Swamp Milkweed (Asclepias Incarnata) pods have just started forming within the last 2-3 weeks. Leaves: Narrower than Common Milkweed, simple. Fragrant flowers are thick and waxy and sweetly scented. Some of those eggs will be laid on butterfly milkweed, swamp milkweed, and whorled milkweed, which naturally emerge later than common milkweed. This species likes dry to medium clay soil — perfect for the plains — and full to partial shade. Weight: One gram Seed Collection Location/Date: New York/2019 $10.00 $5.00 Add to Cart. The pods of common milkweed are comma shaped, thick and covered with spines. PLANT HEIGHT AND SHAPE: Swamp Milkweed can reach a height of around 150 cm (5 ft.), whereas Butterfly Milkweed is shorter, up to one meter (3 ft.) high. Seed pods split open to release seeds that float on the wind. The only one with any blooms is the tropical. The butterfly milkweed (Asclepias speciosis) is given much wider publicity in books and garden magazines; however it doesn’t survive in Zone 2b of the prairies whereas the swamp milkweed will! Like other species of aphids, their populations can explode in a short amount of time. Common milkweed, Asclepias syriaca seeds. I have to stake the Swamp milkweeds and they are the most susceptible of all to aphids. Swamp Milkweed (Asclepias incarnata) As the common name suggests, swamp milkweed grows best in wet soil with full sun or partial shade. There are 5 separate sepals (petal-like leaves) and 5 fused petals. I carefully replanted and watered it and we shall see. Swamp Milkweed is a native perennial of the eastern and central United States and southern Canada (Manitoba, Quebec, and Nova Scotia). General Description . Aya Katz says: May 13, 2018 at 2:46 pm. Alternatively, we previously discussed how setting back a portion of a common milkweed patch by … Plant Size: 1-2 ft (30-60 cm) Swamp Milkweed (Asclepias incarnata) . Asclepias syriaca (Common Milkweed) is a rhizomatous perennial prized for its domed clusters of sweetly scented, pinkish-purple, starry flowers, which bloom from early to late summer. • Common Milkweed (Asclepias syriaca) Flowers: Summer; Red/Pink; 5 parts (petals); Pink to rose-purple. When large populations are present, the plants will appear shiny due to the excretion of honeydew, which can also promote the growth of sooty mold. Butterfly Weed (Asclepsias tuberosa) This type of Milkweed grows best in zones 3-9. . Unlike some other milkweeds (such as Common milkweed and Showy milkweed ), Swamp milkweed is well behaved in the garden and will grow in clumps rather than invasively spreading around with far-reaching underground rhizomes. 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. Sharen says. Learn more about milkweed species and characteristics in this article. Our Butterfly Weed (Asclepias Tuberosa) and Common Milkweed (Asclepias Syrica) seed pods have been forming for some time now. The primary differences between Swamp Milkweed and Common milkweed is that Swamp Milkweed only spreads via seeds, not rhizomes. More information soon to come on Common milkweed ( Asclepias syriaca L.), and Swamp Milkweed (Asclepias incarnata). It is native to central and eastern USA and tends to grow in wet sites along streams, ponds or bogs. This is a moderate spreader in loamy soils (slower in clay) with different-colored flowers. The flower clusters are ball shaped and light pink to purple. Swamp Milkweed emerges very late. Thanks, Kathy. I wouldn't give up on it until late May, even in your warmer zones. Milkweeds are found throughout North and South America, and several are cultivated as ornamentals. The leaves are also longer and wider than swamp milkweed's. It may have “weed” in the name, but there are over 100 species of milkweed … The Swamp milkweed (Asclepias incarnata) also performs well, but the butterfly weed (Asclepias tuberosa) was a little trickier to grow. Unlike swamp milkweed, common milkweed has large broad leaves with a prominent central vein. Height: 50-100 cm (19-39 in) Habitat: Wet Areas; Swamps, marshes, and other wet areas. Yesterday, I found that one of our Swamp Milkweed plants had heaved right out of the ground. Botanical name: Asclepias syriaca. Common milkweed's thick fleshy leaves provide plenty of nourishment for the caterpillar stage of the Monarch butterfly, whose yearly migration to Mexico is near collapse partly due to habitat loss. Swamp Milkweed is a perennial and, as its name may suggest, it is particularly suited to growing in swamp-like conditions: it thrives in moist environments, and is very tolerant to clay-heavy or acidic soil conditions. This species is closely related with the common milkweed, A. syriaca, with which it sometimes hybridizes at the eastern limits of its distribution.These species are similar in appearance and growth form (tall and robust), but can be distinguished by the layer of fine white hairs on speciosa and flowers that look like small crowns. For MILKWEED TOXICITY please go to the bottom of this page. This particular milkweed in the video is purple milkweed, so I am thinking of also discussing how to recognize the different types of milkweed before they bloom, and to distinguish each from dogbane. The sap several contains toxic chemical compounds. Common milkweed prefers sunny, dry locations but grows in a variety of conditions. Swamp milkweed can be found in moist areas with sunny openings such as swamps, marshes, stream banks and other fresh water edges. All other varieties that I have grown stay in the pot quite well. As you all know, we think milkweeds are pretty cool plants and swamp milkweed is one of our favorites. The Myths to Bust Myth #1: Milkweed is an invasive weed. Description: Sometimes called Orange Milkweed, this perennial has large, flat-topped clusters of yellow-orange or bright-orange flowers and blooms May to September. August 2 at 1:27 pm. So, hopefully within the next few weeks I’ll be gathering a number of different milkweed pods to harvest the seed. Swamp Milkweed is a herbaceous perennial that may grow up to 5 feet tall. On this page, we focus on three: Common Milkweed, Swamp Milkweed, and Butterfly Weed, because that is what we have cultivated . Milkweed, genus of about 140 species of herbaceous perennial plants in the dogbane family (Apocynaceae). Here are some comparisons between Swamp Milkweed, Butterfly Milkweed and Common Milkweed. Growing Conditions: Needs sunlight, drought tolerant, dry or moist soil. Sap milky latex. It is common in wetlands. For instance, plants in the milkweed family, Asclepiadaceae, (don't let the name intimidate you), secrete a milky sap (except for Butterfly Milkweed) and opposite or sometimes whorled leaves. Paul participates in an annual nature photography workshop at Merry Lea Environmental Center and says this about his experience and photo: "It was a great workshop with Jerry McCoy from Warsaw. Swamp Milkweed is easily distinguished from other milkweeds (Asclepias spp.) It reaches 3 feet tall. . The narrow, smooth leaves are, lance-shaped and 3 to 6 inches long. Common milkweed is vital to the earlier generations. Reply. The corona (circle of petals around the center of the flower) contains 5 hooded forms facing inwards. Stems smooth, tall, flexible, branching. It is suitable for gardens where it will not dry out. It is a very tough plant. Flowers mostly terminal (positioned at the tops of the stems), in many loose umbels (each rounded cluster arises from the same point); pink or rarely white, with a delicate fragrance. The flowers are a great source of nectar for butterflies, hummingbirds, bees, and other beneficial insects. Swamp milkweed will flower the first summer from seed and like many milkweeds will flower all summer. Asclepias speciosa, (Showy Milkweed). Better late-season milkweed varieties for supporting monarchs are swamp and tropical. . They commonly infest oleander, common milkweed, swamp milkweed and butterfly weed. Grows in Sun/Shade: Sun Uses: The fibers from the dried plants make excellent cordage. The attractive pink and sometimes rose-purple flowers mature in mid-spring and persist into early fall. White swamp milkweed Asclepias perennis This free-flowering native milkweed usually only grows 12-24 inches tall, continually sending up stalks topped with white blooms that often have a … I have had caterpillars on all types that I grow. Common milkweed is slightly toxic to humans, but only if eaten in large amounts, according to the Ohio Agricultural Research and Development Center at Ohio State University. Swamp milkweed is a perennial herb. The common milkweed does well in what might be considered average conditions: moderately dry and well-draining soil, no special fertilizers or nutrition requirements, and about 8 hours of sun a day. Asclepias incarnata (Swamp Milkweed) is an erect, clump-forming perennial prized for its brilliant clusters of fragrant, lilac-pink flowers, which bloom continuously for weeks from mid to late summer. Before I really started learning about Common milkweed I was always fooled by dogbane. swamp milkweed vs common milkweed Published by on 29/08/2020 To see more pictures, get more information or purchase plants/seeds please visit There are two different species of milkweed that have the common name of “Purple Milkweed”; Asclepias purpurascens and Asclepias cordifolia. Milkweed is a beneficial wildflower. Sitting atop upright branching stems, clad with stiff, lance-shaped, taper-pointed leaves, the colorful umbels give way to attractive seed pods in the fall, which persist into winter. Most of the species I’ve worked with prefer that “average” blend of characteristics. The leaf of the swamp milkweed is a narrow lance shape, different than the wider, rounder shape of the common milkweed’s leaf. It can reach a height of four to five feet and should be spaced two to three feet apart. by its erect umbels of pink flowers, tall branching habit, and relatively narrow leaves. The name “milkweed” comes from its white, milky sap. The other two look fine but never flowered. Swamp milkweed will often have multiple stems up to 2 m tall and it can have several stems … Hi Tony, I have tropical milkweed, one swamp & 2 common milkweeds. Other milkweeds with pink flowers, such as Asclepias syriaca (Common Milkweed) and Asclepias sullivantii (Prairie Milkweed), are shorter and less branched plants with wider leaves. Common milkweed (Asclepias speciosa, zones 3 to 9). Also Swamp Milkweeds leaves are a bit smaller, being 2.5” – 6” long and a bit narrower, as well as coming to a point instead of being rounded. Common milkweed (Asclepias syriaca) is a large perennial plant that can is generally two to three feet tall.The leaves are large, long ovals opposite each other. Anchor roots of the Common milkweeds escape through the holes in the pots and you will quickly have a large "plot" of milkweed! 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