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Sea Holly

£0.99£8.99

Eryngium alpinum ‘Superbum’ is eye catching variety for the border delivering with large amethyst-blue flowers and unusual 60cm high metallic stems. Easilly the most attractive of the Sea holly varieties.  The flowers and upper leaves mature to an intense steel blue/purple from summer to late autumn. Requires full sun in very well drained light soils as it originates form high mountain areas.

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Sea Holly

Sea Holly “Eryngium alpinum” ‘Superbum’ is eye catching variety.  For the border delivering with large amethyst-blue flowers . and unusual 60cm high metallic stems. Easilly the most attractive of the Sea holly varieties.  The flowers and upper leaves mature to an intense steel blue/purple from summer to late autumn. Requires full sun in very well drained light soils as it originates form high mountain areas.

Cultivation Advice Sea Holly

  • The seed need a period on intense chilling to break the seeds dormancy.
  • Best sown Oct – Feb whilst cold, although if sown later the seed can be stored in a fridge for 2-3 weeks before sowing to simulate the winter chill.
  • Sow in trays / pots in very well drained soil based seed compost, lightly covering and placing in cold greenhouse or cold frame.
  • Germination is slow anything from 10 – 90 days depending on the conditions.
  • As soon as germinated transfer to its own pot as the roots grow very deep and do not like being disturbed.
  • Grow on until 4-5 inches high and plant out to the final position.

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