Dark green, pinnate fronds are wide at the top and tapering down to a bare strip. Typically grows 2-3 feet in cultivation but may reach 6 feet in moist, cool climates.
Photos courtesy Missouri Botanical Garden.
An upright clump perennial found in prairies and dry forests. The lavender and purple flowers bloom in spikes during the middle of summer.
Photos courtesy Missouri Botanical Garden.
Covered with deep purple blooms from August to September, this perennial will naturalize and prefer moist soils.
Photos courtesy Missouri Botanical Garden.
Vibrant magenta-red flowers with yellow centers cover this compact plant for late season color.
Photos courtesy White Flower Farm.
This bushy, compact plant produces huge amounts of semi-double lilac blue flowers from late summer to early autumn.
Photos courtesy Minor's Garden Center.