Sea Holly 50 Seeds Eryngium planum

Eryngium planum, commonly known as the sea holly, is a striking perennial herbaceous plant admired for its architectural structure, metallic-blue flower heads, and spiny, thistle-like appearance. Native to central and southeastern Europe, this drought-tolerant species thrives in full sun and well-drained soils, making it an excellent choice for xeriscaping, pollinator gardens, and modern landscape designs. Eryngium planum produces branched stems that rise up to 2 to 3 feet tall, topped with clusters of small, rounded flowers surrounded by stiff, spiky bracts, which retain their vivid steel-blue color well into late summer. The deeply lobed, leathery foliage is equally ornamental, forming a neat, basal rosette in spring before giving way to upright, flowering stems. This plant attracts a variety of pollinators, especially bees and butterflies, and is often used in both fresh and dried floral arrangements due to its long-lasting blooms. Requiring minimal maintenance once established, Eryngium planum is deer-resistant and adapts well to poor or rocky soils, thriving in conditions that might challenge many other perennials. Its unique texture and color add bold contrast to softer, more traditional flowers, making it a standout feature in borders, wildflower plantings, or contemporary gardens.