Blue Eryngo

Eryngium planum

How to plant Sea Holly seeds

Sea holly Blue Glitter - Eryngium planum
Blue Glitter Sea holly Eryngium planum Blue Glitter

BLUE GLITTER Sea Holly Seeds

Blue Glitter sea holly produces elegant, dense spikes of blue, pincushion-shaped flowers on long silver-blue stems. Plants grow 35-40 in. tall. Blue Glitter is a versatile perennial for flower arrangements, and the landscape. A Fleuroselect Gold Medal award winner (Europe's highest honor). Winter hardy to zone 4.

15 seeds - $3.99

Sea holly Blue Cap - Eryngium planum PR01025

BLUE CAP Sea Holly Seeds

Blue Cap sea holly is easy to grow. Iridescent bright blue, spiny, thistle-like flowers July to September. Superb cut flowers, fresh or dried. Grows to 3 ft. tall. Winter hardy to zone 5. Combines nicely with Gay Butterflies butterfly weed, Primadonna White echinacea, and Giant Yellow Herold foxglove.

40 seeds - $2.99

How to Plant and Grow Sea Holly

Bee introduces how to plant

Plant Sea Holly Seeds: Sow seeds in 2 in. pots or cell packs, press into soil and barely cover. Needs light to germinate. Kept at 70° F., germination usually within 4 weeks. If not, put container inside a zip-lock bag and place in the refrigerator for 4 weeks. Return to 70° F. until germination occurs. Transplant 'Blue Hobbit' Sea Holly 8-12 in. apart, other Sea Hollies 18-24 in. apart. See starting your seeds, for information on growing seedlings under lights.

Grow Sea Holly: Full sun. Sea Holly plants tolerate heat, drought, humidity and salt and prefer deep, sandy soils. Will tolerate any soil as long as drainage is good. Water weekly during hottest weather for best performance. Cut flowers are long lasting, fresh or dried. The intense blue color of the flowers are intensified by warm days, followed by cool nights. Flowers attract bees, hummingbirds and butterflies.