Pale purple coneflower

Echinacea pallida. Family Asteraceae. Perennial.

Also called Pale coneflower.

A clump-forming prairie perennial native to the central United States, pale purple coneflower has slender stems bearing raised copper-brown cones and long, drooping pink petals. Grow it for its early-summer flowers, visiting pollinators and seedheads that remain useful to birds after flowering.

Hardiness

USDA zones 3a to 8b

UK hardiness: H5 (hardy, -10 to -15°C)

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Grows outdoors in the shaded zones. Select a zone to see what else grows there.

At a glance

Sun
Full sun; tolerates light shade but flowers less and may lean.
Water
Water regularly while establishing; once established, water during prolonged drought rather than keeping the soil constantly moist.
Soil
Well-drained sandy, loamy or gravelly soil, including relatively poor soil; tolerates clay if drainage is good. Avoid waterlogged ground, especially in winter.
Height
2-4 ft (0.6-1.2 m)
Spread
1-2 ft (0.3-0.6 m)
Flowers
Late spring to midsummer; pale pink to pink-purple, narrow, drooping petals around a prominent copper-brown cone.
Foliage
Rough, hairy, narrow green leaves, mostly clustered near the base, with smaller leaves along the stems; dies back in winter.
Growth
Moderate; seed-grown plants may take two or more years to flower.
Care needed
Low

Care

  • Plant in a sunny position with good winter drainage; choose the site carefully because the deep taproot dislikes disturbance.
  • Water deeply during the first growing season, allowing the surface soil to dry between waterings.
  • Avoid routine feeding; rich soil and excess nitrogen can produce weak, floppy growth.
  • Keep mulch away from the crown and avoid thick, moisture-retaining winter mulch.
  • Stake only if stems lean in an exposed position; plants in full sun and lean soil usually support themselves.

Pruning. Leave seedheads standing through autumn and winter for birds, or remove some spent flowers to limit self-seeding. Cut old stems to just above ground level in late winter or early spring before new growth develops.

Through the year

Late winter
Cut down old stems before new shoots emerge, leaving a few hollow stems nearby as insect shelter.
Spring
Plant container-grown plants after the soil becomes workable, and water them in thoroughly.
Late spring
Weed around young plants and check that neighbouring plants are not shading their basal leaves.
Summer
Water new plants during dry spells; established plants generally need water only during prolonged drought.
Late summer
Leave selected flowerheads to ripen for birds or collect seed once the heads are dry and brown.
Autumn
Sow fresh seed outdoors in pots or a prepared seedbed so winter cold can help break dormancy.

In the garden

  • Plant in loose groups among little bluestem or prairie dropseed for an open, prairie-style border.
  • Combine with butterfly weed and black-eyed Susan for contrasting flower shapes and a long season of pollinator activity.
  • Use in sunny gravel gardens where its deep roots suit lean, freely draining soil.
  • Place through the middle of a mixed border, with shorter plants in front to soften the sparse lower stems.
  • Retain seedheads among ornamental grasses for autumn and winter structure.

Garden styles it suits: Native meadow, Midwest prairie, New perennial (prairie), Pollinator garden, Dry gravel garden and Cottage garden.

Plant it with: Little bluestem, Prairie dropseed, Butterfly weed, Black-eyed Susan, Wild bergamot and Rattlesnake master.

Wildlife: Flowers provide pollen and nectar for bees and butterflies. Ripe seeds feed seed-eating birds, including goldfinches in North America; standing stems and surrounding litter can shelter overwintering insects.

Problems to watch for

  • Crown or root rot in wet soil: improve drainage or move to a raised, freely draining site; avoid watering dormant crowns.
  • Aster yellows, causing distorted growth and green, malformed flowers: remove and discard affected plants; there is no cure.
  • Slugs and snails eating emerging shoots: inspect young growth and use barriers, hand-picking or a locally approved control.
  • Floppy stems and poor flowering: provide more sun, stop high-nitrogen feeding and reduce competition from taller neighbours.

Safety

Not known to be toxic to people, cats, dogs or horses, although species-specific safety information is limited. No part is recognised as seriously poisonous; eating plant material may cause digestive upset, and Echinacea can cause allergic reactions in sensitive people. Do not treat garden-grown plants as medicine or animal feed.

Easily confused with

  • Purple coneflower (Echinacea purpurea)

    Usually has broader, toothed leaves and broader petals that spread more horizontally rather than hanging in long, narrow strips.

  • Narrow-leaved coneflower (Echinacea angustifolia)

    Usually shorter, with shorter, less strongly drooping petals. Its pollen is yellow, whereas pale purple coneflower has white pollen.

  • Tennessee coneflower (Echinacea tennesseensis)

    Its pink petals point outward or curve upward rather than hanging steeply down.

The name

Echinacea comes from the Greek word for hedgehog, referring to the prickly flower cone, while pallida means pale and describes the flower colour.

Propagation. Grow from seed sown outdoors in autumn, or give spring-sown seed a cold, moist treatment of roughly 8-12 weeks before sowing in warmth; germination can be uneven. Plants develop a deep taproot, so division is less reliable than seed and established clumps are best left undisturbed.

Checked against open data

Accepted botanical name
Echinacea pallida
In the US and Canada
Native in Canada and the lower 48 states.
Native range
Alabama, Arkansas, Connecticut, Georgia, Illinois, Indiana, Iowa, Kansas, Louisiana, Maine, Masachusettes and Michigan.
Measured
Soil pH 6.5 to 7.2. Average height 51 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.

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