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Eryngium planum 'Blauer Zwerg' (Sea holly)

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Skill rating Beginner
skill rating
Ultimate spread 0.5m
max. spread
Ultimate height 0.5m
max. height
Time to maturity 2-5 years
to maturity
Maintenance level 1 hour care
per year

Botanical name: Eryngium planum 'Blauer Zwerg'

Other names: Sea holly, Eryngium planum Blue Dwarf


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Genus: Eryngium

Variety or cultivar: 'Blauer Zwerg' _ 'Blauer Zwerg' forms clumps of branched stems, and cone-like, lilac-blue flowerheads with spiny bracts in late summer.

Eryngium planum 'Blauer Zwerg' is: Deciduous

Flower: Silvery-grey, Blue, Purple in Summer; Purple, Silvery-grey, Blue in Autumn

Foliage: Dark-green in Summer

Habit: Clump-forming

Plant with: Stipa tenuissima (Mexican feather grass), Sedum spectabile (Brilliant Group) 'Brilliant' (Ice plant 'Brilliant'), Eustachys distichophylla (Weeping finger grass)

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Watch out for

Specific pests: Leaf and bud eelworms

Specific diseases: Foot and root rot , Powdery mildew

General care

Pruning: Cut back flower stems after flowering, or leave them as the seedheads are a very attractive feature through winter.. REGISTER to read more...

Propagation methods: Seed. REGISTER to read more...


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Eryngium planum 'Blauer Zwerg' (Sea holly) will reach a height of 0.5m and a spread of 0.5m after 2-5 years.


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Suggested uses: Coastal, Cottage/Informal, Flower Arranging, Beds and borders, Gravel, Wildlife

Cultivation: Plant in dry, well-drained soil that is poor or moderately fertile. Full sun is essential. Protection from any winter wet.

Suitable for your garden?
In progress indicator
This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Match unknown
Soil drainage: Well-drained Match unknown
Soil pH: Acid, Alkaline, Neutral Match unknown
Light: Full Sun Match unknown
Aspect: South, East, West Match unknown
Exposure: Exposed Match unknown
Hardiness: Hardy (H4) Match unknown

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Eryngium Planum

Question from Alan & Theresa

How far down should I cut back after flowering.

  • Views: 106
  • Replies: 1
  • Posted: Tue. 17th August 2010 14:33
  • Last reply: Wed. 18th August 2010 14:44

We list 5 suppliers who tell us they sell Eryngium planum 'Blauer Zwerg' (Sea holly). In order to see the list you'll need to either register or log in as a full member.


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Gardens with this plant

Rachel's Gardens

Gerard's
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Gerard Rooney

My Garden
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Jeannie Hainsworth Lamb

 

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