Source of plant
'Primadonna White' is an upright, widely-branched, clump-forming, single-type, white-flowered coneflower that typically grows to 30-36" tall on sturdy stems that usually do not need staking. Large daisy-like flowers (each to 3-5" diameter) appear in a floriferous bloom from late spring to late summer, sometimes with additional sporadic bloom until frost. Each flower features slightly drooping bright white rays that surround an orange-brown center cone. Strigose, narrow-ovate leaves (to 4" long) with serrated margins are medium green.
USDA Hardiness Zone