Pollinator plant

Blue Eryngo

Eryngium planum

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Common names

11 names

Names recorded in our plant catalogue and botanical sources, grouped by language. Usage can vary by region.

Catalogue language labels are reviewed separately from botanical source records.

English
Dutch
  • Kruisdistel
  • Vlakke kruisdistel[3]
French
  • Chardon Bleu[3]
  • Panicaut plane[3]
  • Panicaut à feuilles planes[3]
German
  • Flachblättriger Mannstreu[3]
Italian
  • calcatreppola piana[3]

Numbered references identify names recorded by an external source. Other names are from our plant catalogue.

[1] Eryngium planum — Plant Toolbox common names ↗

NC State Extension Gardener Plant Toolbox; English common names in a United States horticultural reference.

Source records
  • Blue Eryngo — ul#common_names > li:nth-of-type(1); heading: Common Name(s):; Eryngium planum.
  • Blue Sea Holly — ul#common_names > li:nth-of-type(2); heading: Common Name(s):; Eryngium planum.
  • Flat Sea Holly — ul#common_names > li:nth-of-type(3); heading: Common Name(s):; Eryngium planum.
  • Sea Holly — ul#common_names > li:nth-of-type(4); heading: Common Name(s):; Eryngium planum.
[2] Royal Horticultural Society — common names ↗

Names retained from the referenced botanical profile or table.

Source records
  • blue eryngo — Page 2, column 1, row top 637 pt; common-name cell after Eryngium planum.; Eryngium planum.
[3] Eryngium planum — iNaturalist taxon names ↗

Community-curated iNaturalist taxonomy. This is a common-name attestation, not an independent botanical determination.

Source records
  • Blue Eryngo — results[0].names[2]; taxon id 162710; Eryngium planum.
  • Flachblättriger Mannstreu — results[0].names[11]; taxon id 162710; Eryngium planum.
  • Chardon Bleu — results[0].names[6]; taxon id 162710; Eryngium planum.
  • Panicaut plane — results[0].names[7]; taxon id 162710; Eryngium planum.
  • Panicaut à feuilles planes — results[0].names[8]; taxon id 162710; Eryngium planum.
  • calcatreppola piana — results[0].names[21]; taxon id 162710; Eryngium planum.
  • Vlakke kruisdistel — results[0].names[18]; taxon id 162710; Eryngium planum.
Plant references

Source-backed information

Published observations for this plant. Each reference supports the information beside it.

Botanical family
Apiaceae

Genus-level classification for Eryngium; this does not confirm the complete catalogue name.

Sources [1]
Taxonomy
NC State Extension publishes a profile under Eryngium planum.

Profile-name match; no accepted-name status is asserted.

Sources [2]
Mature height
0.61–0.91 m

NC State Extension profile. Converted from the source range in feet and inches; mature size varies with growing conditions.

Sources [2]
Mature spread
0.3–0.61 m

NC State Extension profile. Converted from the source range in feet and inches; mature size varies with growing conditions.

Sources [2]
Plant habit
Clumping; Erect

NC State Extension profile.

Sources [2]
Life cycle
Perennial

NC State Extension profile.

Sources [2]
Light
Full sun (6 or more hours of direct sunlight a day)

NC State Extension profile.

Sources [2]
Moisture and drainage
Good Drainage; Occasionally Dry; Very Dry

NC State Extension profile.

Sources [2]
Soil texture
Loam (Silt); Sand

NC State Extension profile.

Sources [2]
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)

NC State Extension profile. These source categories do not certify the catalogue’s numeric pH interval.

Sources [2]
Flowering season
Summer

NC State Extension profile. Seasons reflect the source region and do not verify the catalogue’s exact flowering months.

Sources [2]
Native range
E. Central Europe to Mongolia and W. Himalaya

NC State Extension profile. Origin reported by the source; this is not a claim of local nativeness.

Sources [2]
Reported wildlife attraction
Listed as attracting: bees, butterflies, pollinators.

NC State Extension profile. Broad wildlife categories; this does not establish flower visits by a named bee species or quantify nectar and pollen.

Sources [2]
Pollinator guidance
RHS includes Eryngium planum in its Plants for Pollinators guidance.

RHS planting guidance. Choose accessible flowers with pollen and nectar; reduced-resource and double-flowered forms may be unsuitable.

Sources [3]
Catalogue ratings

Who this plant supports

Honey bees

Low suitability
Nectar value Low
Pollen value Low
Plant profile

About this plant

Blue Eryngo (Eryngium planum) is a herbaceous plant. It flowers from June to July.

Sources and references

References for the information marked with source numbers on this page.

Sources checked
  1. Catalogue of Life Eryngium — Catalogue of Life COL26.8

    COL26.8 (2026-08-20). Contributing checklist: Synonymic Checklists of the Vascular Plants of the World. This is taxonomic evidence, not an independent ecological study.

    Supports: Botanical family
    Relevant sections
    • Botanical family: NameUsage.tsv line 1892205; ID 62RRS; rank genus; status accepted

    Source checked on .

    Source data licence: CC BY 4.0.

  2. NC State Extension Eryngium planum — Plant Toolbox

    NC State Extension Gardener Plant Toolbox. Growing conditions and seasons reflect its United States horticultural context.

    Supports: TaxonomyMature heightMature spreadPlant habitLife cycleLightMoisture and drainageSoil textureSoil pHFlowering seasonNative rangeReported wildlife attraction
    Relevant sections
    • Taxonomy: Main botanical heading (h1)
    • Mature height: Dimensions / Height
    • Mature spread: Dimensions / Width
    • Plant habit: Habit/Form
    • Life cycle: Life Cycle
    • Light: Light
    • Moisture and drainage: Soil Drainage
    • Soil texture: Soil Texture
    • Soil pH: Soil pH
    • Flowering season: Flower Bloom Time
    • Native range: Country Or Region Of Origin
    • Reported wildlife attraction: Attracts

    Source checked on .

  3. Royal Horticultural Society RHS Plants for Pollinators — Plants Of The World

    RHS planting guidance; applicable flower-form restrictions are retained. General recommendations do not measure local nectar or pollen production.

    Supports: Pollinator guidance
    Relevant sections
    • Pollinator guidance: Page 2, column 1, entry Eryngium planum (top 637 pt)

    Source checked on .