Wildflower Archive

prairie wildflower

Narrow-leaved purple coneflower

Echinacea angustifolia

Also known as Black Samson, Black Samson Echinacea, Narrow-leaf Coneflower, narrowleaf purple coneflower

Narrow-leaved purple coneflower (Echinacea angustifolia)1 of 2
Jasper Shide

Native to the Great Plains, the Rockies, and the Midwest and southern Canada

Western Minnesota to Saskatchewan and Montana, south to Texas and New Mexico

  • Light Full sun to part shade Sun tolerance
  • Moisture Dry Moisture preference
  • Zones 3–9 Cold to heat range
  • Bloom Apr–Jul Flowering time
  • Height up to 28 in to 71 cm
  • Life cycle Perennial Annual to perennial
Full details, see below

In the garden

A prairie wildflower for full sun to part shade and lean, dry soil. Its pink and purple flowers peak in May. At up to 28 in, it suits meadows and sunny borders. Hardy in USDA zones 3–9.

Growing conditions

Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet

Hardiness zones

Find your zone:

When it blooms

The Narrow-leaved purple coneflower's pink and purple flowers bloom April to July, peaking in May. This late-spring display draws bees and butterflies.

Apr–JulJanFebMarAprMayJunJulAugSepOctNovDec

Narrow-leaved purple coneflower blooms pink & purpleFoliage

Pollinators & wildlife

  • Bees Common Eastern Bumble Bee
    also Western Honey Bee, Brown-belted Bumble Bee, American Bumble Bee +14 more Tricolored Bumble Bee, Bicolored Striped Sweat Bee, Red-belted Bumble Bee, Black-and-gold Bumble Bee, Half-black Bumble Bee, Nevada Bumble Bee, Golden Sweat Bee, Dark-veined Longhorn Bee, Southern Plains Bumble Bee, Cresson's Mining Bee, Big-cheeked Angled-Mason, Tickseed Longhorn Bee, Pseudopanurgus albitarsis, Melissodes subillata
  • Butterflies Monarch
    also Red Admiral, Pearl Crescent, Common Buckeye +12 more Queen, Viceroy, Clouded Sulphur, Common Wood-Nymph, Tawny-edged Skipper, Arogos Skipper, Anatrytone logan lagus, Atrytone delaware, Ottoe Skipper, Polites origenes, Cynthia cardui, Speyeria idalia
  • Flower flies Long-tailed Aphideater also grasshopper bee fly

Butterflies that use this plant

Documented host and nectar records. Each links to a planting guide for that butterfly.

Full plant details

Where it grows

Habitat
PrairieThe wild plant community it grows in.
Native range
The Great Plains, the Rockies, and the Midwest and southern CanadaUnited States (13): CO, IA, KS, MN, MO, MT, ND, NE, NM, OK, SD, TX, WY. Canada (2): MB, SK. Where it grows wild on its own, by state and province.
Native distribution
Western Minnesota to Saskatchewan and Montana, south to Texas and New MexicoThe same native range, usually more exact than the state list, and often noting where it has spread beyond it.

Growing conditions

Light
Full sun to part shadeHow much sun it takes, from full sun to full shade.
Moisture
DryThe soil dampness it prefers, from dry to wet.
Hardiness zones
USDA 3–9 · Canadian 3–7The cold-to-heat climate range it survives.
Soil
Clay Loam, Medium Loam, Sandy Loam, Clay, SandyThe soils it grows in naturally.
Soil texture
Light to heavy (sandy to clay)The soil grade it prefers, from sand to clay.
Soil pH
Mildly acid to mildly alkalineThe acidity to alkalinity it tolerates (7 is neutral).
Water use
LowHow thirsty it is, a rough guide to how often to water.

Growth & form

Height
up to 28 in (to 71 cm)Typical mature height.
Spread
~2 ft (0.5 m)How wide one plant gets, a guide to spacing.
Life cycle
PerennialWhether it lives a single season (annual), two (biennial), or returns for years (perennial).
Growth rate
ModerateA relative ranking versus other plants of the same type (USDA), not an absolute rate.

Flowers, foliage & fruit

Type
WildflowerWhat kind of plant it is.
Bloom
Apr–JulWhen it flowers.
Flower color
Pink, PurpleThe bloom color, or colors.
Fruit/Seeds
Achene; ripens Aug–OctThe seed or fruit it sets after flowering.
Toxicity
None knownWhether any part is poisonous to people or pets.