http://davesgarden.com/guides/pf/go/40130/#b

http://www1.umn.edu/news/features/2012/UR_CONTENT_378473.html

http://www.ehow.com/how_2078923_prevent-soil-erosion.html

http://www.fcps.edu/islandcreekes/ecology/common_milkweed.htm

http://myfolia.com/plants/3005-common-milkweed-asclepias-syriacahttp://www.illinoiswildflowers.info/weeds/plants/cm_milkweed.htm

http://www.nps.gov/plants/pubs/chesapeake/plant/246.htm

http://www.pollinationstation.org/planting-instructions.html

http://suite101.com/article/how-to-grow-common-milkweed-asclepias-syriaca-a112673

http://www.scienceviews.com/plants/commonmilkweed.html

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