50 seeds 070069 £2.95 In stock
Items will be despatched in 5-7 working days.
1 x 9cm plant, for spring planting 511306-1 £7.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery.
3 x 9cm plants, for spring planting 511306-3 £19.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery.
More Details

Eryngium alpinum is a glamorous, blue-tinged, large-flowered sea-holly, Loved by Pollinators.

Eryngiums rank with euphorbias, poppies, sunflowers and Parrot tulips as my favourite plants for cutting and for the garden. The sculpted heads in steely grey or rich royal blue are hard to beat. Grow them and grow lots of them.

Genus Eryngium alpinum
Type Hardy Perennial
Common Name Sea Holly
Border Position Back, Middle
Soil Type Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained, Well-drained
Height 75cm (30in)
Spacing 45cm (18in)
Sowing, Seeds, Planting Direct sow March and/or August. May need a warm-cold-warm cycle and may be slow to germinate, taking up to 80 days.
Care Tips Sow in the autumn for best results, in shallow pans in light soil under a cold frame. Seeds can take a long time to germinate. Plant out the seedlings, and protect from cold, wet winter days. Leave the attractive seedheads on over winter. This grows well in container pots.
Flowering July - October, the following year
Vase Life Give eryngiums a long drink in deep water. They should last for 2 weeks. Or dry in time for your Christmas table.
Harvesting Flower production: 12 weeks.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
How to sow your own exotic meadow

Garden designer Tom Stuart-Smith has used his expertise to create an exotic, smaller-scale version of the Olympic wildflower meadows.


Plant Delivery - When in stock, please allow up to 2 weeks for delivery.

Seeds Delivery - Items will be despatched in 5-7 working days.

Click here to find out more information about our delivery rates and times.

Write a Review

Eryngium alpinum reviews

There are currently no reviews for this product. Be the first to write one!

Write a Review
Review guidelines

Please let us know how you got on with growing our seeds, bulbs and plants, or using a piece of kit, or taking part on one of our courses or events.

We love hearing your garden success stories and sharing growing combos, advice and ideas with fellow enthusiasts. If you'd like to share a picture, we love receiving these on Facebook and Twitter.

Please note we may choose to use your review in other places within the sarahraven.com website.

If you've had a problem with one of our products, and for the quickest response, please get in touch with our Customer Service team who can deal with returns and refunds, as well as answer any questions you may have.