Asclepiadaceae, Asclepias syriaca, Monarch butterfly, Monarch butterfly Linnaeus Danaus plexippus Nymphalidae Wisconsin USA North American North America nature natural environment habitat orange black common wildlife wild northwoods north woods graceful pattern adult spring summer field insect bug fly flys, North America, Wisconsin, common, common milkweed, cream-colored, field, fields, flora, flower, flowers, green, grow, growing, host, milkweed, milky, native, north american, north woods, northwoods, perennial, pink, plant, pretty, red, summer, summertime, toxic, weed, wildflower