Eryngium

The blue hue,is spreading

Think this is a slightly different one , I've got one like the one posted here , this one is new this year and I've misplaced (lost) the label, it has variegated spikey leaves whereas the other plant has large roundish leaves at the bottom I should be going back to the garden centre soonish and if they have anymore I'll try to remember to snap a pic of the name, anyhows it's proper blue and I need to collect some seeds and grow a hedge of em