Steel blue sea holly

Filler · Apiaceae

Sea holly

Eryngium spp.

Also known as Eryngium and Eryngo

Spiky, steel-blue blooms associated in modern use with independence and resilience.

Colour: Steel blue

Often read as independence and resilience.

Peak season
Jul–Sep
Vase life
7–14 days
Birth month
—
Colours
3

What the sea holly means

Sea holly is neither a holly nor a thistle but a member of the carrot family, and some species grow wild on coastal dunes, which gives it its common name. In Elizabethan England the candied roots of Eryngium maritimum, sold as eryngoes, were a sweetmeat with a reputation as an aphrodisiac, and Shakespeare mentions them in The Merry Wives of Windsor. Modern florists often describe sea holly as a symbol of independence, attraction, and resilience, meanings that suit its spiky, silvery look rather than any long tradition.

Flower meanings come mostly from Victorian floriography, and they vary between books, eras, and cultures.

Often sent for

  • Just because
  • Birthday
  • Thank you
  • Get well

By colour

  • Steel blue Often read as independence and resilience.
  • Silver Associated with strength and calm in modern use.
  • Green Sometimes read as renewal.

Keeping it fresh

Summer into early fall; long-lasting fresh and also sold dried.

  1. 1 Wear gloves; the spiny bracts are sharp.
  2. 2 Recut stems and change the water every few days; sea holly is long-lasting.
  3. 3 Hang bunches upside down to dry; the color holds well.

Pet safety

  • cats Not listed
  • dogs Not listed
  • horses Not listed

Not listed in the ASPCA plant database. If a pet eats any, call your vet or ASPCA Animal Poison Control at (888) 426-4435.

“Not listed” means the ASPCA has no entry for this plant — not that it is safe. Keep it out of reach.

Source: ASPCA toxic and non-toxic plants. If a pet eats any plant, call your vet or ASPCA Animal Poison Control at (888) 426-4435.

Did you know

Miss Willmott's ghost, a silvery sea holly, is named for gardener Ellen Willmott, who was said to scatter its seeds secretly in friends' gardens.

Make your own sea holly bouquet

Pick a vase, add a card, and share the link — no delivery van, no wilting.

Open Flower Studio