Eryngium Big Blue

Eryngium planum

£21.99

size guide

The height of all of our plants is measured from the base of the pot.

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Pot Size Pot Diameter Pot Height
6cm 6cm 5.5cm
9cm 9cm 8.5cm
1 Litre 13cm 11cm
2 Litre 17cm 13cm
3 Litre 19cm 15cm
4 Litre 20cm 17cm
5 Litre 23cm 19cm
7 Litre 25cm 20cm

Please note: the pot sizes listed below may vary due to the suppliers we use.

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  • Eryngium ‘Big Blue’ is one of those plants that really stands out in the garden. With its spiky blue flower heads and silvery tones, it has a slightly unusual, almost sculptural look that adds something a bit different to your planting.

  • It works especially well in sunny borders, where it can contrast nicely with softer, more traditional flowers. Even a small group of plants can make an impact and give your garden a bit more texture and interest.

  • Once it’s settled in, it’s very easy to look after. It’s a hardy perennial, so it will come back year after year, and it copes well with drier conditions, making it a great low-maintenance option.

  • The flowers are also a favourite with bees and butterflies, so it’s a good choice if you want to attract more pollinators into your garden.

    • Plant genus Eryngium

    Common Name Sea Holly

    Plant type Herbaceous Perennials

    Foliage type Herbaceous, Perennial

    Hardiness Hardy

    Soil acidity Neutral

    Planting aspect South Facing, West Facing, Partial Shade or Sun

    Flower colour Blue, Silver

    Leaf colour Green

    Edible Use No

    Planting Companion Geranium, Salvia, Nepeta

    Light Required Full Sun

    Watering Water regularly after planting until the roots are established. Once settled in, the plant is relatively drought tolerant and usually only needs extra water during prolonged dry spells. Plants grown in containers will need more frequent watering than those growing in the ground.

    Best Growing Conditions Grow in sun or partial shade in fertile, well-drained loam. Choose a position with good airflow and enough space for the plant to reach its mature size. Mulch after planting and keep the root zone free from prolonged waterlogging, particularly through winter.

    Christmas Tree Delivery

    FREE on all Pot Grown Trees (2.5ft & over)
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    *Northern Ireland delivery unavailable

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    Premium Standard Delivery (2-4 working days) - Royal Mail

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    Premium Next Working Day Delivery - Royal Mail

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    *Mainland UK only

    Northern Ireland & Islands Delivery (2-5 working days)

    £6.99 on all orders

    Top tip

    Remove damaged or spent growth as it appears and keep the area around the plant free from weeds so air and light can reach the base. Good drainage is especially important, so avoid leaving the roots sitting in persistently wet or compacted soil.

    Key Features

    Good For Cut Flowers

    Good For Cut Flowers

    Beginner Friendly

    Beginner Friendly

    Comes Back Each Year

    Comes Back Each Year

    Good For Containers

    Good For Containers

    Low Maintenance

    Low Maintenance

    Wildlife Friendly

    Wildlife Friendly

    Season of Interest

    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Planting