Sea holly (Eryngium agavifolium)

Sea holly

Sea holly features rosettes of long, spiky green leaves resembling those of agave plants, which is a survival adaptation for arid conditions. This perennial's striking silhouette is further accented by tall, branching stems bearing metallic-blue flower heads, particularly sought after by gardeners for their decorative and drought-resistant qualities.

Scientific classification

Species

Sea holly (Eryngium agavifolium)

Carrots, ivies and allies

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Perennial

Lifespan

Herb, Succulent

Plant Type

1.2 m

Plant Height

50 cm

Spread

Green

Leaf Color

Green

Flower Color

Images of Sea holly

Distribution of Sea holly

Distribution Map

Sea holly is native to the temperate zones of South America, primarily flourishing in the Andean mountain regions. It has been introduced and thrives as a cultivated ornamental in various parts of Europe, reflecting a successful acclimation beyond its original habitat.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Sea holly

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Sea holly thrives in arid regions, showing high drought tolerance and preferring well-drained soil. Water weekly for optimal health. As a full sun outdoor plant, it withstands dry conditions and is suitable for xeriscaping due to its efficient water storage capabilities.

Pruning: Sea holly features spiky leaves and thistle-like flowers, requiring early spring pruning of damaged leaves and spent stems after blooming. Regularly pruning maintains shape, prevents disease, and strengthens growth. Always use sterilized tools to ensure a healthy and visually appealing plant throughout the growing season.

Propagation: Sea holly is a perennial with a thistle-like appearance. Propagation is best achieved by sowing seeds, which should be lightly covered with soil for light exposure. Use well-draining, moist soil until germination, then transplant seedlings into individual pots for optimal growth.

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