Eryngium Big Blue


Sea holly, an upright deciduous, clump-forming, herbaceous perennial with silvery-veined green, spiky foliage. In summer it has electric blue flower heads with blue bracts on sturdy stems, the blue extending down the stems. Will reach a height of 0.8m and a spread of 0.45m after 2-5 years.


Plant in dry, well-drained soil that is poor or moderately fertile. Full sun is essential. Protection from any winter wet.


General Herbaceous & Perennial Planting and care

  • Water the pot thoroughly and allow to drain fully.
  • Dig a hole twice the size of the pot being planted and fork over the base. Adding some planting compost.
  • Remove the pot gently, if well rooted cut off the pot.
  • Ensure that the top of the Root ball is level with the surrounding soil.
  • Replace the remaining soil and heel in, water the area thoroughly.
  • Water regular until established.
  • Apply some general fertiliser every spring.