Purple coneflowers ( Echincea purpurea ) and black - eyed Susans ( Rudbeckia fulgida ) are sometimes both call coneflower , but the two are trenchant species . Both are perennials — which means they live year after year — and both are wildflowers aboriginal to woodland , prairie and meadows of eastern North America . When found together , these flowers bloom at the same time in recent summer , creating complementary purpleness and yellow flowers that draw butterflies and bee to the thou .
Size and Form
Step 1
Both purple coneflowersand black - eyed Susans grow in clumps , overstep by farseeing flowers stem . Purple coneflowers are the taller of the two , reach elevation to 5 feet and spreading up to 2 foot wide . fateful - eyed Susans grow up to 3 feet magniloquent and spread to 2 1/2 feet all-encompassing . royal coneflowers have rigid stem that last long after the blooms have withered off and tend to ego - semen . Black - eyed Susans spread by rhizomes , or hush-hush roots .
Blooms and Foliage
Despite their name , royal coneflowers bloom with pinkish and rosy purple flowers , and some cultivars raise white blossoms . coneflower bloom from June through August with daisy - shape , slightly drooping petals surrounding a bronze - orange mall phonograph record . Deadheading old flowers encourages the plants to blossom again in fall , but seed heads give on the works draw small birds to the yard . Black - eyed Susans also begin blooming in June , but go along to give rise flower through October . These daisy - corresponding , yellow - Orange River petal palisade brown - purple disk . Deadheading old flowers encourages the plants to produce more flower . Both metal money have fizgig - shaped leaves , though the coneflower has dark leaf with saw-toothed margin .
Requirements
Purple coneflowers and black - eyed Susans are often group together in the garden , as they share many Sunday , territory and moisture prerequisite . Both produce well in full sun to partial refinement vulnerability and prefer well - draining territory . Both tolerate mud , dry and jolty ground , tolerate drought , and withstand pasture cervid . Purple coneflowers grow in U.S. Department of Agriculture flora hardiness zones 3 through 8 , while dark - eyed Susans produce in USDA zone 3 through 9 .
Uses and Potential Problems
Both empurpled coneflowers and black - eyed Susans make colored , scummy - maintenance addition to native gardens , borders , repeated bed or naturalized areas . Purple coneflower are attractive in partly shaded woodland gardens , while pitch-dark - eyed Susans add burnished color to cottage gardens . purplish coneflower may occasionally know damage from Japanese beetle or foliage spot . dim - eyed Susans are n’t broadly susceptible to pests or disease .
References
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