High Country Gardens - A gorgeous patio planting featuring Sea Holly (Eryngium planum Blue Glitter) https://www.highcountrygardens.com/perennial-plants/unique-plants/eryngium- planum-blue-glitter | Facebook
Eryngium planum 'Blue Hobbit'
Eryngium planum 'Blue Hobbit' plants | Thompson & Morgan
Eryngium planum 'Victory Blue' bare roots — Buy sea holly plants online at Farmer Gracy UK
Eryngium Planum 2ltr | Welcome to Hawley Garden Centre ONLINE
Shop Eryngium (Sea Holly) planum 'Blaukappe' | J. Parker's
Buy Eryngium planum (Blue Eryngo) in the UK
Eryngium planum 'Blue Cap' (Flat Sea Holly)
Eryngium planum 'Blue Hobbit' | BBC Gardeners World Magazine
Eryngium planum 'Blue Glitter' | Walters Gardens, Inc.