This grower is sure of this plant identification.
Wild rye, Lyme grass
Elymus magellanicus (Wild rye). This is a densely tufted, mound forming perennial grass with linear, flat or folder, intense blue leaves. Lax, almost prostate flower spikes are borne throughout summer.
Italics = data drawn from parent genus or species
Happy to swap the plants on my listings for any bee-friendly, herbaceous perennials. Particular interests are Echinacea, Monarda, Veronica, Astrantia, Agastache, Salvia, Thalictrum etc.