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Centaurea coerula · Asteraceae

Cornflower

✅ Pet-friendlyPerennial, remaining green throughout the year.30 to 60 cm
Full sunModerate, allow to dry between wateringsEasyWithstands light frosts down to minus 5 degrees Celsius.

Description & origin

The Cornflower is a perennial plant known for its vibrant blue thistle-like flowers. Ideal for Mediterranean gardens and attracts pollinators.

Size

Remains compact, ideal for borders.

Foliage

Evergreen foliage that retains its green throughout the year.

Flowering

Blooms abundantly in spring and summer.

Detailed care

Light

Prefers full sun for optimal growth.

Soil

Well-drained, slightly alkaline soil is ideal.

Watering

Moderate watering, allowing the soil to dry slightly between waterings.

Temperature

Tolerates cold well but prefers temperate climates.

Fertilising

Fertilize in spring with a balanced fertilizer.

Repotting

Transplant in spring or autumn, avoiding extreme heat periods.

Pruning

Remove spent flowers to encourage new blooms.

Propagation

Easily propagated by seeds in spring.

Common problems

Powdery Mildew

Can occur in high humidity conditions. Treat with appropriate fungicide.

Root Rot

Caused by overwatering. Ensure good soil drainage.

Aphids

May attack leaves and flowers. Control with natural insecticide.

Uses & curiosities

In the garden

  • Attracts pollinators
  • Ideal for borders
  • Flowers for dried arrangements

Other uses

Used in dried floral arrangements

Did you know…

Cornflower blooms are often used in dried floral arrangements due to their durability.