A native perennial to west TX, southern NM and AZ, this species is more suited to our drier, alkaline soils than the eastern Eupatorium species. Eupatorium greggii blooms all summer, with its nectar-rich Ageratum-like flowers, and is very attractive to butterflies. Though it may not be winter hardy, it's worth growing for the color and butterflies. 30 inches tall and 36 inches wide.
Performs best in an enriched loam or loamy clay, Eupatorium greggii does well in full sun with regular irrigation or in partial shade with less frequent watering. Listed as a Zone 7 plant, and so may not over-winter in our region.