Purple Coneflower
Echinacea purpurea

Purple Coneflower

3a–9bHardiness zone
SummerFall
Peak bloom windowZone 6b · frost-offset weeks
Winter
Not in bloom
Spring
Peak bloom
Summer
Peak bloom
Fall
Not in bloom
Peak bloom
In bloom
Gallery
Purple Coneflower
Purple Coneflower
Purple Coneflower
Background

Purple coneflower is the most versatile perennial in the garden. The daisy-like flowers, rose-purple rays around a bristly orange-brown cone on stems 2 to 4 feet tall, are reliably beautiful from midsummer into autumn, the seed heads give winter structure and bird food, and the plant is extraordinarily low-maintenance once established. It is native to the eastern United States, from the Mid-Atlantic to Georgia and west to the prairies.

Plant it 18 to 24 inches apart in full sun or part shade, in average to poor soil that drains; it tolerates clay and drought and resents rich, wet ground, which makes it flop. Water through the first season and then only in a long drought. Deadhead for more flowers in summer, but stop in late summer and leave the last heads standing through winter; goldfinches rely on them. Divide every four or five years if the clump opens.

Cut for the vase when the rays are fully open but before they reflex, and the stems last a week; the cone keeps developing after cutting and dries well. Bees, butterflies and beetles work the open cones all summer, and it is a host plant for the silvery checkerspot. Deer and rabbits leave it alone. The species and the single-flowered cultivars feed wildlife; the double and pompom forms do not.

Care guide
SunFull sun to partial shade
WaterLow to moderate once established; excellent drought tolerance
SoilAverage to poor, well-draining; tolerates clay
Spacing18–24 inches
Height2–4 feet
Zone3a – 9b
Native Region
Native range, from wild records. Select a state for its native plants.

Ecoregions:Northern ForestsEastern Temperate ForestsGreat Plains

Direct sowFrost hardy
Seasonal tasks
winter
sowSow direct or cold-stratify seeds before spring sowing
spring
cutDivide clumps every 3–4 years to maintain vigour
summer
cutCut when ray petals are fully open before they begin to reflex back
buyOrder seed - about two months before sowing
fall
sowSow direct or cold-stratify seeds before spring sowing
watchLeave seed heads standing through winter for goldfinches
Common problems

Powdery mildew

Symptoms

White or grey powdery coating on leaves - usually starting on older growth in humid conditions or when nights cool.

Treatment

Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.

From the field journal