Mediterranean sea holly (Eryngium bourgatii)

Mediterranean sea holly

Also known as: Bourgati's eryngo

Mediterranean sea holly is a showy and low-maintenance perennial flower. Its dark silvery-green foliage has deep veins and the plant produces a cone-like flower in a silvery blue hue. These plants grow best in direct sun and drier soil. It is very attractive to bees and butterflies.

Scientific classification

Species

Mediterranean sea holly (Eryngium bourgatii)

Carrots, ivies and allies

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Perennial

Lifespan

Herb

Plant Type

Summer, Early fall

Bloom Time

15 cm to 45 cm

Plant Height

30 cm

Spread

Green, Silver, Gray

Leaf Color

2.5 cm

Flower Size

Blue, Violet

Flower Color

Images of Mediterranean sea holly

Distribution of Mediterranean sea holly

Distribution Map

Mediterranean sea holly is indigenous to the mountainous regions of Southwestern Europe. In its native habitat, it thrives in rocky soils and higher altitude areas. Beyond its natural range, mediterranean sea holly has been introduced and cultivated in gardens for its ornamental qualities, further extending its presence into temperate regions. Mediterranean sea holly enjoys popularity among garden enthusiasts and landscapers, which contributes to its propagation beyond indigenous territories.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Gardens

Cultivars

There are several recognized cultivars of Mediterranean sea holly, including the following common varieties :

Mediterranean sea holly 'Oxford Blue'

Care Guide for Mediterranean sea holly

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Mediterranean sea holly thrives in rocky, dry habitats with high drought tolerance, necessitating minimal watering—ideally once a week. Preferring full sun, it is best grown outdoors in well-draining soil to prevent root rot in wetter climates.

Fertilize: Mediterranean sea holly thrives with balanced fertilizer during spring to summer, applying a high-phosphorus option every 4-6 weeks. Water soil beforehand to enhance absorption. Reduce fertilization as fall dormancy approaches to sustain vigor and bloom while avoiding root burn and over-fertilization.

Pruning: Mediterranean sea holly features spiny, silver-blue leaves and thistle-like flowers. Prune in early to late spring by removing dead foliage and spent flower stems to enhance growth and shape. Post-flowering cuts promote vigor and reduce legginess, improving air circulation and overall plant health.

Propagation: Mediterranean sea holly is easily propagated through cuttings from sturdy, non-flowering stems during active growth. Use well-draining soil and rooting hormone to enhance root development. Keep cuttings moist and sheltered. Once established, mediterranean sea holly requires minimal care and tolerates various well-drained soil types.

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