Which flowers do monarchs use for nectar?

Adult monarchs nectar from a variety of blooming plants. Most importantly, make sure that there is nectar available throughout the growing season by providing a highly diverse foraging area. Some species are favored over others, depending on your region. The Xerces Society has regional monarch nectar plant guides, which highlight plants that monarchs have been documented nectaring on. Lists of recommended nectar plants for pollinators in general by region can be found at The Xerces Society and the Pollinator Partnership.