Overview
Eryngium giganteum is a plant with a clump forming habit in the genus Eryngium, part of the Apiaceae family, with deciduous foliage. Eryngium giganteum grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H5. Suggested uses include cottage and informal garden, coastal, gravel garden, wildlife gardens, cut flowers and flower borders and beds.
About
Eryngium giganteum is a clump-forming cultivar of the Eryngium genus, which belongs to the Apiaceae family. This deciduous plant thrives in full sun and is suitable for south-, west-, or east-facing aspects, tolerating exposed conditions. It prefers well-drained soils such as chalk, loam, or sand, across a range of pH levels from acid to alkaline. Hardy to UK zone H5, it is well suited to cottage and informal gardens, coastal and gravel gardens, wildlife areas, flower borders, and as cut flowers. Propagation can be achieved by seed, root cuttings, or division.
Wikipedia contributors, CC BY-SA 4.0 — Eryngium giganteum
Growing conditions
Best soil and position for Eryngium
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed
- UK hardiness
- H5
Plant details
Eryngium giganteum size, habit and characteristics
- Habit
- Clump forming
- Foliage
- Deciduous
- Suggested uses
- Cottage and informal garden, Coastal, Gravel garden, Wildlife gardens, Cut flowers, Flower borders and beds
Care notes
Pruning and caring for Eryngium giganteum
- Propagation
- Seed, Root cuttings, Division
- Pest resistance
- Leaf and bud eelworms, Slugs and snails
- Disease resistance
- Root rot, Powdery mildews
Frequently asked questions
Where is the best place to plant Eryngium giganteum?
Eryngium giganteum prefers full sun. It suits exposed positions.
What soil does Eryngium giganteum need?
Eryngium giganteum is adaptable and grows happily in most soil types, including chalk, loam and sand. It is happy in soil of any pH. Aim for soil that stays well-drained.
Is Eryngium giganteum hardy in the UK?
Eryngium giganteum has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Eryngium giganteum?
Seed, Root cuttings, Division.
More in the Eryngium genus
- Eryngium 'Blue Spikes'
- Eryngium agavifoliumSea Holly
- Eryngium bourgatii
- Eryngium eburneum
- Eryngium ovinumblue devil
- Eryngium planum 'Blaue Kappe'Blue Eryngo
- Eryngium planum 'Seven Seas'Blue Eryngo
- Eryngium x zabelii 'Big Blue'Sea Holly
