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Eryngium alpinum
Eryngium alpinum
Garden Diary

Date purchased or acquired:

Where acquired:

Location in the garden:


The next time you are buying perennials please look for our helpful labels and blue pots, and remember "The best perennials come out of the blue"!

Eryngium alpinum

Alpine Sea Holly

USDA Zone: 3-9

Plant number: 1.205.050

Sea Holly features open umbels of steel-blue prickly flowers, which are a favourite for cutting, fresh or dried. This superb selection features large bristly flowers on strong stems, in a rich metallic blue shade. A versatile plant, fitting well into the sunny border. Tolerant of hot, dry sites once established. Flowers are attractive to butterflies. For dried use, cut stems just as the first few flowers in each umbel are almost fully opened: hang upside down in a dark, warm room to dry. Divide plants in spring every 3 to 4 years.

Further details for
Eryngium alpinum

Optimal Growing
Appearance and
Sun Exposure
  Full Sun
Soil Type
  Normal or
Soil pH
  Neutral or
  Alkaline or
Soil Moisture
Care Level
Flower Colour
  Deep Blue
Blooming Time
  Early Summer
  Mid Summer
  Late Summer
Foliage Color
  Grey Green
Plant Uses & Characteristics
  Accent: Good Texture/Form
  Attracts Butterflies
  Cut Flower
  Dried Flower
  Rabbit Resistant
   45-60 cm
   18-23 inches
   25-30 cm
   10-12 inches
Foot Traffic
Growth Rate
Disclaimer: This information is presented for reference only. This plant is not currently part of our Heritage Perennials lineup.