coneflower

When to plant coneflowers?

Botanical name
Echinacea purpurea
Family
Asteraceae

Coneflowers are planted from September to October. They flower from June to September.

Coneflowers are perennial plants.

coneflower
Photo: Eric Hunt · CC BY-SA 4.0

Coneflowers through the year

JanFebMarAprMayJunJulAugSepOctNovDec
Planting
Flowering
15913172125293337414549
  • planting
  • flowering

In short

Planting
from September to October
weeks 36 to 43
Flowering
from June to September
weeks 26 to 37
Propagation
division, cuttings and seed

Growing conditions

🧪
pH
6 to 8
☀️
Sun
full sun
💧
Water
little water
❄️
Frost
overwinters outdoors
📏
Height
91 to 122 cm

Pests and diseases

Listed here is every problem for which the sources name this plant as a host. The problems are not listed in order of how common they are.

Aphids

pest
Signs
Colonies of small aphids sit on the shoot tips and the underside of the leaves. The leaf curls and puckers, and sticky honeydew is left on everything below. The viruses they carry are more dangerous than the feeding itself.
Prevention
Go easy on nitrogen, because soft sappy growth is what aphids are looking for. Encourage the predators (ladybirds, lacewings, parasitic wasps). Use a reflective mulch, which puts them off settling, and a strong jet of water to knock the colony off the tips.

Powdery mildew

disease
Signs
A white, floury coating spreads over the leaves, first on the lower and older ones. The leaf under it yellows and dries up. The fruit stays small, because the plant loses leaf surface.
Prevention
Plant resistant varieties, leave an airy spacing and sun, and clear the debris at the end of the season. Unlike most fungi it is not helped by wet foliage, since it spreads in heat and high air humidity, in a dry summer too.

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Related plants

The plants below are in the same botanical family (Asteraceae).

Sources about the plant: Clemson Cooperative Extension, GBIF Backbone Taxonomy, NC State Extension Plant Toolbox, University of Illinois Extension, Wikidata. Checked between 14 and 28 August 2026. The problem descriptions also draw on: KGZS, Royal Horticultural Society, UF/IFAS Extension, University of Maryland Extension, University of Wisconsin-Madison Division of Extension, Utah State University Extension.