Seeds and Plant Production Published Jan 2010 Flowering occurs from May to June with seed set and Edited: 03Jan2011djt, 03Jan2011ls, 03jan2011dgo dispersal occurring from July to September 1992). Several potential pollinators that have For more information about this and other plants, been observed visiting milkweed include Welsh’s please contact your local NRCS field office or bees, wasps, and butterflies. One species of carpenter Conservation District at http://www.nrcs.usda.gov/ bee (Xylocopa ssp. and one californica arizonensis) and visit the PLANTS Web site at species of bumble bee (Bombus have been bifarius) http://plants.usda.gov/ or the Plant Materials Program observed carrying milkweed pollen (USDI-FWS, Web site http://plant-materials.nrcs.usda.gov. 1992). PLANTS is not responsible for the content or References availability of other Web sites. USDI-FWS. 1987. Endangered and threatened wildlife and plants; final rule determining to be a Asclepias welshii (Welsh’s milkweed) threatened species with critical habitat. In: Federal Register. 52(208): 41435-41441. USDI-FWS. 1992. milkweed (Asclepias Welsh’s recovery plan. U.S. Fish and Wildlife welshii) Service, Denver, Colorado. 19pp. Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins. 2003. A Flora. Third Edition, revised. Brigham Young University, Provo, UT. Prepared By: USDA NRCS Plant Materials Center, Derek Tilley; Aberdeen, Idaho. USDA NRCS Plant Materials Center, Loren St. John, Aberdeen, Idaho. USDA NRCS, Boise, Idaho. Dan Ogle, Citation Tilley, D., L. St. John and D. Ogle. 2010. Plant guide for milkweed (Asclepias welshii). Welsh’s Resources Conservation Service, Idaho Plant Materials Center. USDA IS AN EQUAL OPPORTUNITY PROVIDER AND EMPLOYER
Seeds and Plant Production Flowering occurs from May to June with seed set and dispersal occurring from July to September 1992). Several potential pollinators that have been observed visiting Welsh’s milkweed include bees, wasps, and butterflies. One species of carpenter bee (Xylocopa californica ssp. arizonensis) and one species of bumble bee (Bombus bifarius) have been observed carrying milkweed pollen (USDI-FWS, 1992). References USDI-FWS. 1987. Endangered and threatened wildlife and plants; final rule determining Asclepias welshii (Welsh’s milkweed) to be a threatened species with critical habitat. In: Federal Register. 52(208): 41435-41441. USDI-FWS. 1992. Welsh’s milkweed (Asclepias welshii) recovery plan. U.S. Fish and Wildlife Service, Denver, Colorado. 19pp. Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins. 2003. A Flora. Third Edition, revised. Brigham Young University, Provo, UT. Prepared By: Derek Tilley; USDA NRCS Plant Materials Center, Aberdeen, Idaho. Loren St. John, USDA NRCS Plant Materials Center, Aberdeen, Idaho. Dan Ogle, USDA NRCS, Boise, Idaho. Citation Tilley, D., L. St. John and D. Ogle. 2010. Plant guide for Welsh’s milkweed (Asclepias welshii). Resources Conservation Service, Idaho Plant Materials Center. Published Jan 2010 Edited: 03Jan2011djt, 03Jan2011ls, 03jan2011dgo For more information about this and other plants, please contact your local NRCS field office or Conservation District at http://www.nrcs.usda.gov/ and visit the PLANTS Web site at http://plants.usda.gov/ or the Plant Materials Program Web site http://plant-materials.nrcs.usda.gov. PLANTS is not responsible for the content or availability of other Web sites. USDA IS AN EQUAL OPPORTUNITY PROVIDER AND EMPLOYER
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