Eryngium ‘Big Blue’

Eryngo 'Big Blue'

Eryngium × olivierianum ‘Big Blue’, often called sea holly ‘Big Blue’, makes a bold statement in gravel or coastal gardens. Its upright stems reach 75cm, topped with thimble-shaped blue flowerheads edged by spiky, silvery-blue bracts in midsummer. A clump-forming perennial, it thrives in well-drained soil and sun, gaining the RHS Award of Garden Merit, valued by pollinators and excellent as a long-lasting cut flower.

Flowering Months

Jan J

Feb F

Mar M

Apr A

May M

Jun J

Jul J

Aug A

Sep S

Oct O

Nov N

Dec D

Size

Max Height

0.5 m — 1.0 m

Max Spread

0.1 m — 0.5 m

Growth Habit

Grows in tight bunches from base, forming rounded groups.

Planting Position

Sunlight i Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.

Full Sun

Aspect i Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.

South East West

Exposure i Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.

Exposed / Sheltered

Hardiness i Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.

(−15 to −10 °C) Cold-hardy

Ideal Soil Conditions

Soil Type i Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.

Chalk Loam Sand

Soil Moisture i Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.

Free draining

Soil pH i Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.

Acid Alkaline Neutral

Plant Uses & Merits

Uses

Architectural
Patios / Courtyards
Coastal Areas
Containers
Banks / Slopes
Flower Borders

Merits

Drought Resistant
RHS | Award Of Garden Merit
Good for Cut Flowers

Eryngium ‘Big Blue’ Description

Planting Guide for Eryngium ‘Big Blue’

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Care guide for Eryngium ‘Big Blue’

Items must be returned within 30 days after receiving your order. Items must be returned in the same condition in which they were received, be unworn/unused, have any tags still attached, and include all the original packaging.

Uses for Eryngium ‘Big Blue’ & Garden Styles it suits

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