Produces copious amounts of nectar especially adored by bumble bees. Flowers have a sweet odor that attracts all sorts of pollinators, and is another larval host plant of monarch butterfly caterpillars. Often occurs in light shade and where it may be more difficult for monarchs to find, but for gardeners with more shade it offers an excellent option. Green comet tolerates moist to dry roadsides, fields, and prairie and can be found from Montana south through Wyoming, Colorado, Arizona, New Mexico, and east to Florida and New York.