Eryngium alpinum
Alpine Sea Holly
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Alpine Sea Holly (Eryngium alpinum) - Description
Eryngium alpinum (alpine sea holly, alpine eryngo or queen of the Alps) is a perennial herb in the family Apiaceae.
Alpine Sea Holly (Eryngium alpinum) - Blooming
Sea hollies look different according to where they are found. Species from wet, marshy areas have greenish white flowers with small bracts. Others usually form basal rosettes, with spiny leaves, and cylindrical umbels of stalkless flowers.
Alpine Sea Holly (Eryngium alpinum) - Growth
Annuals, biennials, and evergreen and deciduous perennials, found both in dry and moist areas. Sea hollies grow best in full sun.
Alpine Sea Holly (Eryngium alpinum) - Planting
When ripe, sow seeds in containers in a cold frame. Cold frames are protective structures, located outside for propagating and growing plants. Conduct division in spring. Division entails propagating a plant by splitting it into 2 or more parts. Each part has its own root system and more than one shoot or dormant bud. The plants usually take some time to re-establish. Can also propagate perennials from root cuttings in late winter.
Alpine Sea Holly (Eryngium alpinum) - Pest
Eryngium is vulnerable to slugs, snails, root rot, and powdery midlew.
Alpine Sea Holly (Eryngium alpinum) - Interesting facts
There are around 230 species of Eryngium, native to dry, rocky sites and coastal areas in Europe, northern Africa, Turkey, central Asia, China, and Korea. They are also found in wet marshy grasslands in Mexico, Brazil, and Argentina.
Alpine Sea Holly (Eryngium alpinum) - Soil and irrigation
Different species of Eryngium have varying cultivation requirements. Some need dry, poor to moderately fertile, well-drained soil, while others do best in moist, fertile, soil with good drainage. Protect the former from excess winter moisture.
