Eryngium, commonly known as Sea Holly, is an ornamental perennial cherished for its thistle-like appearance, silvery or blue-tinted flower heads, and showy bracts. Its steel blue foliage and captivating blooms add a unique and striking element to gardens.

Sea Holly plants boast a variety of striking and ornamental forms. The size of Eryngium plants ranges from compact, low-growing species of just 12 inches tall. Its flowers bloom in a variety of colors, including blue, white, and silver. The flowers are compact clusters of small flowers surrounded by spiky bracts. The flowers bloom in the summer and sometimes into fall.