This grower is sure of this plant identification.
Seed grown plant. Variegated spiny leaves, blue flowers in summer. Good for drying.
Eryngium bourgatii (Sea holly). A herbaceous perennial from Spain with basal leathery, grey-green and silver veined leaves. Umbels of flower spikes rise up to 75cm and bear profuse blue-purple flowers surrounded by silvery spiny bracts. ‘Othello’ is a compact form producing shorter flowers on strong, thick stems.
They are fully to half hardy. Grow in sun with fertile well drained soil.
Walls, rock garden.