91417

Eryngium x zabelii ‘Big Blue’

Sea holly

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 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: Eryngium x zabelii 'Big Blue'
  • Common name: Sea holly
  • Family: Apiaceae
  • Plant Type: Perennial
Flower colour:

Blue

Foliage colour:

Silver

Eryngiums make a striking addition to dry, sunny borders and gravel gardens. They have thistle-like flowers, made up of tiny flowers packed together in a tight cluster, surrounded by a ruff of spiny bracts. The flowerheads last well when cut and can also be dried.

Advertisement

Eryngium x zabelii ‘Big Blue’ bears huge cones surrounded by ruff of long and spiky bracts. Flowers are a particularly dense blue colour, which contrast beautifully with the grey-green leaves. It’s perfect for growing in sunny, well-drained borders, especially in informal and wild gardens, where the blooms will attract masses of bees.

Advertisement

For best results grow Eryngium x zabelii ‘Big Blue’ in free-draining soil, in a sunny position. In colder climates you may need to protect the roots with a mulch of straw, and tidy spent foliage in spring to prevent rot.

How to grow Eryngium 'Big Blue'

  • Plant size

    100cm height

    60cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Middle

  • Sun exposure: Full sun
  • Hardiness: Hardy
  • Soil type: Chalky / alkaline / clay / heavy / moist / well drained / light / sandy

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 not Plant in April

Do Plant in May

Do Plant in June

Do Plant in July

Do Plant in August

Do 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 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 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

Eryngium 'Big Blue' and wildlife

Eryngium 'Big Blue' is known for attracting bees, butterflies​/​moths and other pollinators. It has nectar/pollen rich flowers.

Attractive to Bees

Does not attract Beneficial insects

Does not attract Birds

Attractive to Butterflies​/​Moths

Attractive to Other pollinators

Is Eryngium 'Big Blue' poisonous?

Eryngium 'Big Blue' 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 Eryngium 'Big Blue'