Eryngium amethystinum, commonly known as amethyst eryngo, is a clump-forming perennial herb native to grasslands and rocky areas in the eastern Mediterranean region, particularly Italy and the Balkans. It thrives in dry, calcium-rich soils and typically reaches heights of 12 to 20 inches (30 to 50 centimeters). This plant is characterized by its striking light blue to purple stems and leathery, spiny leaves that form a rosette at the base. During mid to late summer, it produces distinctive cylindrical umbels of silvery blue bracts that resemble thistles and are highly attractive to pollinators such as bees and butterflies.

Amethyst eryngo is appreciated for its unique ornamental qualities, including its metallic blue flower heads that add a touch of color and texture to borders, rock gardens, and xeriscaping. It is also used in dried flower arrangements due to the long-lasting nature of its bracts. In cultivation, Eryngium amethystinum requires well-drained soil, preferably alkaline, and full sun exposure to thrive. It is drought-tolerant once established, making it a low-maintenance choice for gardeners. While generally pest-free, it can occasionally suffer from root rot if grown in poorly drained soils.CC BY-SA 4.0