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Eryngium ‘Big Blue’
at Digging Dog


Sea Holly

Dynamic is a rare adjective to apply to a plant, but it’s the best we can think of to describe Eryngium. From its leathery lobed leaves to the spiny, decorative bracts that host the flower, the Sea Holly has a sense of movement that is up and out. Excellent in fresh or dried arrangements, the flowers are borne on tall, branching stems, and the terminal blooms hold their color while lateral flowers develop, until the entire stem is covered with mature blossoms.

Eryngiums love well drained soil in the open sun, and are an arresting addition to the mixed border, especially when planted amidst Rudbeckia, the Achilleas, and grasses.

Eryngium ‘Big Blue’ full sun

This hardy Eryngium is big on blue—the electrifying, iridescent kind that promises to tantalize any garden visitor. A Blooms of Bressingham introduction, ‘Big Blue’s green spiky foliage and thick stems create an intriguing candelabra-shaped base for the bright 4 in. wide inflorescences. A blue drama is yours for the viewing as silvery white bracts and green cones, over the course of several weeks, gradually transmute amazing cerulean shades, imbuing even the stalks below.


Blooms July – September.

Size: 2'–2-1/2' high x 15"–18" wide. Zone 4/5.

Eryngium ‘Big Blue’ (P-1593)
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Other selections in this genus

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Current Staff’s Favorite Plant

staff favorite plant

Our favorite plant this week: We love Astrantia major 'Lars' for it's ornate, richly colored blooms, that look great in an arrangement, either fresh or dried. Celebrating bright and cheerful colors, crowns of maroon bracts deliver gorgeous cherry red floral mounds with lighter pink centers. ‘Lars’s blooms loll high above broad deep green lobed leaves on slender stems. This energetic Danish cultivar looks a bit like an overly exuberant Italian Flat Parsley and makes an unparalleled up-front cottage-style filler that is easy to care for.

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