What Are the Different Types of Amethyst Sea Holly Plant

Amethyst Sea Holly, also known as Eryngium amethystinum, is a stunning perennial plant that is prized for its unique, spiky flowers and striking foliage. Native to Europe and North Africa, this plant is a favorite among gardeners for its drought tolerance, deer resistance, and ability to attract pollinators like bees and butterflies. There are several different types of Amethyst Sea Holly plants that vary in size, color, and growing requirements. In this article, we will explore some of the most popular varieties of Amethyst Sea Holly.

1. Eryngium x zabelii ‘Big Blue’

One of the most well-known cultivars of Amethyst Sea Holly is Eryngium x zabelii ‘Big Blue’. This variety features large, steel-blue flower heads that are surrounded by spiky, silvery blue bracts. ‘Big Blue’ is a robust plant that can reach heights of up to 3 feet and blooms from midsummer to early fall. It is a great addition to both formal garden beds and wildflower meadows.

2. Eryngium planum

Eryngium planum, also known as Blue Eryngo or Flat Sea Holly, is another popular type of Amethyst Sea Holly. This variety produces intense blue flower heads that contrast beautifully with its green foliage. Eryngium planum is a smaller plant compared to other varieties, typically growing to about 2 feet tall. It is well-suited for rock gardens, borders, and containers.

3. Eryngium alpinum ‘Superbum’

Eryngium alpinum ‘Superbum’ is a show-stopping variety of Amethyst Sea Holly with bright blue flower heads that can grow up to 4 inches in diameter. This cultivar is known for its long-lasting blooms and sturdy stems that make it perfect for cut flower arrangements. ‘Superbum’ prefers well-drained soil and full sun, making it ideal for sunny garden locations.

4. Eryngium bourgatii

Eryngium bourgatii, commonly referred to as Mediterranean Sea Holly, is a unique type of Amethyst Sea Holly with silver-green foliage and striking violet-blue flowers. This variety has a more compact growth habit compared to other types of Amethyst Sea Holly, making it a great choice for small gardens or containers. Eryngium bourgatii thrives in well-drained soil and prefers full sun.

5. Eryngium giganteum

Eryngium giganteum, also known as Miss Willmott’s Ghost, is a tall and imposing variety of Amethyst Sea Holly that can reach heights of up to 5 feet. This plant features silver-grey foliage and large, cone-shaped flower heads that start off green before turning a deep amethyst color. Eryngium giganteum is a striking focal point in any garden and is sure to draw attention from both humans and pollinators alike.

6. Eryngium variifolium

Eryngium variifolium is a lesser-known type of Amethyst Sea Holly that boasts variegated foliage with green and white markings. This unique variety adds interest to the garden even when not in bloom, making it a great choice for mixed borders or rockeries. Eryngium variifolium thrives in well-drained soil and can tolerate drought once established.

In conclusion, the Amethyst Sea Holly plant offers a wide range of options for gardeners looking to add texture and color to their landscape. Whether you prefer the bold statement of ‘Big Blue’ or the delicate beauty of Eryngium variifolium, there is a type of Amethyst Sea Holly to suit every taste and gardening style. Consider incorporating these stunning plants into your garden design to enjoy their beauty year after year.