Eryngium (eryngo or sea holly) growing in Dublin, Ireland Stock Photo - Alamy
Eryngium bourgatii
How To Grow Eryngiums (Sea Holly) | BBC Gardeners World Magazine
Beautiful Eryngium Flowers | GlobalRose
Eryngium Big Blue
Magical Blue Lagoon - Royal Flowers
Blue Eryngium Thistle 80 stems - JR Roses
Irish Wildlife Trust - SPECIES OF THE WEEK Sea Holly Eryngium maritimum Cuileann trá This native plant is Ireland's only species of Eryngium (herbs with hairless and usually spiny leaves) in the
Eryngium maritimum (Sea Holly) : MaltaWildPlants.com - the online Flora of the Maltese Islands.
Eryngium 'Slieve Donard' from H. McB July 13 - Irish Garden Plant Society