Eryngium x zabelii 'Big Blue' (Sea Holly) — Clump forming

Overview

Eryngium x zabelii 'Big Blue' is a plant with a clump forming habit in the genus Eryngium, part of the Apiaceae family, with deciduous foliage. Eryngium x zabelii 'Big Blue' 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 x zabelii 'Big Blue' is a clump-forming, deciduous member of the Apiaceae valued for its summer flowering. It blooms from June to September. Plant it in full sun on well-drained chalk, loam or sand and place where east, west or south aspects receive direct light. Tolerant of exposed sites and hardy in most UK gardens (H5).

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 x zabelii 'Big Blue' 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 x zabelii 'Big Blue'

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 x zabelii 'Big Blue'?

Eryngium x zabelii 'Big Blue' prefers full sun. It suits exposed positions.

What soil does Eryngium x zabelii 'Big Blue' need?

Eryngium x zabelii 'Big Blue' 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 x zabelii 'Big Blue' hardy in the UK?

Eryngium x zabelii 'Big Blue' 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 x zabelii 'Big Blue'?

Seed, Root cuttings, Division.

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