There are clusters of approximately 20 flowers near the top of each plant. Skip to the beginning of the images gallery, © 2020 AmericanMeadows.com All rights reserved, Find the Right Perennials for Your Garden, Watch Our Spring-Planted Flower Bulb Videos, Watch Our Fall-Planted Flower Bulb Videos, Shipping begins the week of May 10th, 2021, Shipping begins the week of May 3rd, 2021, Shipping begins the week of April 19th, 2021, Shipping begins the week of April 5th, 2021, Shipping begins the week of March 29th, 2021, Shipping begins the week of March 22nd, 2021, Free Ground Shipping Right To Your Event Or Business, Attract Pollinators & Do Good For The Environment. The erect, hairless, slender, plants are 1 to 3 feet tall when mature, and can grow singly or in clumps. Small clusters of white flowers bloom a little later in the season providing color in your garden when most flowers have disappeared. Plants will spread by rhizomes but are not considered invasive. Score D - 6-25 4-km2 grid cells. Asclepias quadrifolia, commonly known as whorled milkweed or four-leaf milkweed, is an upright single-stemmed herbaceous perennial that typically grows to 1-2 1/2’ tall. HABITAT: In Massachusetts, Whorled Milkweed is found on dry balds, rock outcrops, ridgetops, This hardy perennial grows from 12" - 24" tall and blooms from July until September. I’ve only five milkweed species in my garden: the common, butterfly milkweed, swamp milkweed, green milkweed, and short milkweed, but it’s a good start. fewflower milkweed (A. lanceolata), purple milkweed (A. purpurascens), red milkweed (A. rubra), and butterfly milkweed (A. tuberosa). It is one of about 115 species that occur in the Americas. In Minnesota it is found in western, central, and southern prairies. Monarchs will lay their eggs and the larvae (caterpillars) will enjoy a late season feast. Native to central and eastern North America this Asclepias likes drier conditions. Best in sunny locations with sandy loams. This pioneer species colonizes disturbed roadsides, ditches and railroad rights of way. Showy milkweed (Asclepias speciosa) The white flowers can be a greenish-white on some plants. Butterfly gardens, meadows, prairies, or naturalized/native plant areas. How many have you planted in your yard or your neighborhood? The Garden wouldn't be the Garden without our Members, Donors and Volunteers. Number of Populations. RANGE: Whorled Milkweed is found in North America from Massachusetts and New York west to the Great Plains states and adjacent Canada, and south to the Gulf Coast. HABITAT & HARDINESS: Plants range through North America from Canada south to Florida and west to New Mexico. Recent significant declines in monarch butterfly populations in North America are believed by many experts to be related to a corresponding significant decline in milkweed plants which in large part has been caused by an increased use of glyphosate herbicides around food crop areas where glyphosate-tolerant (Roundup Ready) crops are being grown.Genus name honors the Greek god Asklepios the god of medicine.Specific epithet comes from the Latin word verticillatus meaning whorled in reference to the leaves appearing in whorls.Common name suggests this plant is noted for its whorled leaves and milky sap. When the Whorled Milkweed is mature it reaches a height around 2'. Common milkweed has a wide native range, but it might not be the best choice. Step by step instructions on how to plant your wildflower seeds. Learn about varieties which help to replenish nutrients to your soil. Asclepias verticillata, commonly known as whorled milkweed, is an upright perennial that typically grows to 2.5’ tall on simple, usually unbranched stems clad with long, narrow, sessile, needle-like, linear leaves (each 2-3” long) with revolute margins arranged in whorls of 3 … Native Range for Asclepias verticillata (Whorled Milkweed) - AL, AR, AZ, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MT, MS, NC, ND, NE, NH, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, WV, WY. Butterfly weed is a member of the milkweed family (Asclepiadaceae). Butterfly weed is a member of the milkweed family (Asclepiadaceae). Mexican whorled milkweed (Asclepias fascicularis) This is found from Washington, Oregon, and Idaho to Nevada, Utah, and California into Mexico. Flowers give way to smooth, narrow seed pods (to 3” long) which split open when ripe releasing numerous silky-tailed seeds for dispersal by the wind. To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low Swamp milkweed will eventually form a large clump and is best spaced 2-3 feet apart. Easily grown in average, dry to medium moisture, well-drained soils in full sun. Please open upon receipt and follow the instructions included. The species name tuberose refers to the tuberous (knobby and with swellings) roots. Between June and September, which allows the plant has thin `` whorled leaves '' northeastern limit its. First qualifying order is placed you will receive a second email the your! Confirmation email with cold freezing winters and hot summers ) will enjoy a late season feast the monarch population refers... 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