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Centaurea montana ‘Grandiflora’

Mountain cornflower

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Centaurea montana 'Grandiflora'
  • Common name: Mountain cornflower
  • Family: Asteraceae
  • Plant Type: Perennial
Flower colour:

Blue

Foliage colour:

Green

Centaurea montana is a variable but attractive plant native to the mountain meadows and woodlands of continental Europe. It typically has grey-green, lance-shaped leaves and large, deep blue or violet flowers in early summer. It grows best in a moisture-retentive soil in sun or partial shade.

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Centaurea montana ‘Grandiflora’ is an easy-to-grow, clump forming perennial with elongated, mid-green leaves that perfectly complement summer flowers. The blooms are large and violet-blue. Grow in drifts in informal borders, or in groups of three or five in a sunny border. ‘Grandiflora’ is also suitable for raising in pots.

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For best results grow Centaurea montana ‘Grandiflora’ in a sunny border in moist soil. Remove faded summer flowers to encourage a second flush in autumn.

How to grow Centaurea 'Grandiflora'

  • Plant size

    45cm height

    60cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Front, middle

  • Sun exposure: Full sun, dappled shade
  • Hardiness: Hardy
  • Soil type: Well drained / light / sandy / clay / heavy / moist / chalky / alkaline

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do Divide in March

Do Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do not Divide in September

Do not Divide in October

Do not Divide in November

Do not Divide in December

Prune
Prune

Do not Prune in January

Do not Prune in February

Do not Prune in March

Do not Prune in April

Do not Prune in May

Do not Prune in June

Do not Prune in July

Do not Prune in August

Do Prune in September

Do Prune in October

Do Prune in November

Do not Prune in December

Centaurea 'Grandiflora' and wildlife

Centaurea 'Grandiflora' is known for attracting bees and other pollinators. It nectar-pollen-rich-flowers.

Attractive to Bees

Does not attract Beneficial insects

Does not attract Birds

Does not attract Butterflies​/​Moths

Attractive to Other pollinators

Is Centaurea 'Grandiflora' poisonous?

Centaurea 'Grandiflora' has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Centaurea 'Grandiflora'