Eryngium planum

Eryngium planum, commonly known as sea holly, is a beautiful perennial plant that features striking blue to light violet-blue flowers and multicolored foliage. This herbaceous plant is well-loved for its unique appearance and is a popular choice for gardens and landscapes.

One of the standout features of Eryngium planum is its aculeate leaf tips, which adds a touch of texture to the plant. The foliage leaves are ovate or egg-shaped, providing an interesting contrast to the overall appearance of the plant. With good winter hardness, this plant can thrive in USDA zones 5 and 6, making it suitable for a wide range of climates.

When in bloom, Eryngium planum produces small, captivating flowers in the form of capitulum or head-shaped inflorescences. These inflorescences are relatively small, measuring less than 5 cm in length and 1-2 cm in diameter. The combination of the vibrant flower color and the unique inflorescence structure creates a visually stunning display.

Eryngium planum thrives in sunny conditions, requiring ample sunlight to grow and develop properly. This plant prefers well-drained soil and should not be subjected to excessive moisture. It is essential to ensure appropriate moisture levels to prevent waterlogged roots and potential rotting.

The growth habit of Eryngium planum is erect, meaning it grows upright and vertically. This characteristic contributes to its overall attractiveness and makes it a great choice for creating structured and organized garden designs.

The foliage of Eryngium planum is one of its standout features. With its multicolored patterns, the leaves add a touch of visual interest to the plant. The combination of green, silver, and sometimes bluish hues create a breathtaking visual feast that will surely captivate any gardener or passerby.

Overall, Eryngium planum, or sea holly, is a remarkable perennial plant that deserves a place in any garden or landscape. Its aculeate leaf tips, multicolored foliage, and stunning flowers make it an excellent addition to sunny garden beds, borders, or containers. With proper care and maintenance, this plant can provide years of beauty and enjoyment for any gardener.

Market availability index by month: