Eryngium 'Sea Holly' Big Blue 3L

Common Name: Sea Holly Big Blue

Latin Name: Eryngium planum 'Big Blue'

Plant Type: Perennial

Description: Eryngium planum 'Big Blue' is a clump-forming perennial with spiny, silvery-blue foliage and striking metallic-blue flower heads surrounded by spiky bracts. It provides bold architectural interest from midsummer into early autumn, with attractive seed heads that extend seasonal appeal.

Garden Impact: Perfect for sunny borders, gravel gardens and wildlife-friendly planting, it adds strong texture and vivid colour to mixed displays. Its upright habit contrasts beautifully with softer flowering perennials and ornamental grasses.

Light & Water Requirements: Grow in full sun in well-drained soil and water sparingly once established.

Size (Fully Grown): Approximately 60-80cm high × 40-50cm spread

Pet Friendliness: Generally considered non-toxic to cats and dogs, although the spiny foliage can cause minor injury if handled or chewed.

Delivery is from £6.50 and is calculated at the checkout screen when you enter your postcode. We use a range of carriers or our own vehicles depending on your location and products ordered and is between 3 and 5 days.

Local Delivery
Local delivery is made using our own vans and will depend on your location as to which day delivery will be.
Delivery starts from £6.50

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

See our full Returns Policy here