Eryngium planum ‘Blue Glitter’ seeds -(Sea Holly)


This plant is a clump-forming perennial which produces flowers in summer. They are steel-blue in colour, and appear a little like thistles on branched stems rising from a tight crown of dark green basal leaves. The flowers are excellent for picking, and the plant is a valuable summer garden filler, adding texture to the border.

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This plant has large clusters of steel-blue flowers, which are somewhat prickly.
It flowers in the first year from seed, which makes it a valuable plant for the border or for cutting. It is excellent both as a cut flower and fresh or dried. It can be divided quite easily in early spring. It is also quite adaptable being able to tolerate hot, dry places, and salty soils . It is attractive to butterflies.
It won the Fleuroselect Gold Medal in 2007 as a plant of excellent merit and was the cutflower of the year in 2009 in America.

Sowing advice
Sow spring, early summer late summer and autumn in trays or pots .Surface sow onto moist well-drained seed raising mix. Just cover with mix. Propagate 18-22°C. for 2-4 weeks. Do not exclude light. Germination can be slow. If there is no germination in 3-4 weeks, then cold stratify. Move to a fridge 4°C for 3-6 weeks. After this return to warmth but no more than 18°C. If germination does not occur within 6-10 weeks return to fridge for further 3-6 weeks. Examine regularly whilst in fridge and immediately remove any seeds which show signs of germination. Move to 8cm pots. Acclimatise and plant out after danger of frost has passed.

Additional information


Hardy Perennial

Common Name

Sea Holly



Maximum Height

80 cm

Number of seeds in packet

approx 20