[data-breadcrumbs] { opacity: 1 !important; visibility: visible !important; } @media screen and (max-width: 767px) { [data-breadcrumbs] [data-breadcrumb-middle] { display: inline-flex !important; } [data-breadcrumbs] [data-breadcrumb-ellipsis] { display: none !important; } }

Eryngium Alpinum Superbum Seeds

Botanical Name: Eryngium alpinum

Striking purple-blue flower cones surrounded by vivid blue bracts
Excellent for fresh and dried arrangements
Architectural foliage adds structure to borders
Attractive to pollinators

50 seedsSKU: 13448

Sent within 5-7 working days

£3.49

FREE Delivery on all orders over £45!

Buy with confidence - quality guarantee

High germination rates

Expert growing support available

DescriptionDetailsSow & GrowPlanting CalendarDelivery

Eryngium alpinum 'Superbum' is a striking sea holly producing long purple-blue flower cones surrounded by vivid blue bracts and soft spines. Its deeply toothed glossy foliage adds structure to sunny borders, while the unusual flower heads are excellent for fresh cutting or drying for long-lasting arrangements. The flowers also provide a useful source of nectar for visiting pollinators.

Key information

Botanical Name: Eryngium alpinum

Genus: Eryngium

Plant Class: Hardy Perennial

Characteristics & growing conditions

Plant Height: 60

Colour: Blue

Habitat: Bushy,Upright

Position: Full Sun

Attractive to: Attractive To Bees and Attractive To Butterflies

Sow indoors November-March in pots or trays, around 0.5cm deep. Leave in a cold greenhouse or cold frame, as a period of cold helps germination, which can be slow and erratic. Prick seedlings into individual pots as they emerge. Bring any ungerminated seed into a greenhouse in spring, where further germination may occur. Harden off from late May and plant into the flowering position in September-October, spacing around 60cm apart. Flowers June-September.

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Sow Indoors

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Sow Outside

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Flowers / Harvest

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Hassle-Free Delivery

Looking for a hassle-free way to get your gardening essentials? Look no further than DT Brown! We know how important your garden is to you, and want you to be able to stock up on everything you need. All our delivery charges will automatically appear in your shopping basket.

Seed Only Orders

£2.95 delivery charge

Non-Seed Items

£6.95 delivery charge

Combined Orders

£7.95 delivery charge (e.g. seeds and plants)