SEAHOLLY ERYNGIUM GLITTER WHITE
Sea holly is a bespoke flower adding interest to flower bouquets.
First year flowering perennial cut flower, suitable for drying 
Long lasting spiny flowers add texture and drama to arrangements
Thrives in hot dry growing conditions, blooming all summer
Life Cycle: Perennial
Use: Cut flower, focal flower, textural accent, fresh and dried arrangements
Height: 70–90 cm
Spacing: 30–45 cm between plants
Transplant to finish: 20–24 weeks from transplant (flowers reliably from the second year, though some plants may bloom lightly in the first season)
Transplant carefully, avoiding root disturbance as plants develop a deep taproot and dislike being moved once established.
Pinching: Not recommended. Plants naturally produce multiple flowering stems, and pinching may delay flowering.
Staking: Usually not required. Strong, upright stems rarely need support, although staking may be beneficial in very windy sites.
Frost: Hardy once established. Tolerates moderate to heavy frosts and overwinters well in temperate climates. Protect young seedlings from severe frost.
Photoperiod: Facultative long-day—flowers more freely under long summer days.
Exposure: Full sun (6–8+ hours daily)
🌾 Soil & Fertility
Soil: Well-drained, light, sandy or gravelly soil
pH range: 6.5–7.5
Fertilizer: Apply a light application of balanced fertiliser in spring.
Avoid excessive nitrogen, which encourages soft growth and reduces flower quality.
💧 Watering
Keep evenly moist during establishment.
Once established, sea holly is highly drought tolerant and performs best with deep, infrequent watering.
Avoid poorly drained or waterlogged soils.
✂️ Harvesting & Post-Harvest
Harvest stage: Harvest when the flower heads are fully coloured and the surrounding bracts have completely opened.
Stem length: 50–80 cm ideal for bouquets.
Post-harvest:
Remove lower foliage.
Place immediately into clean water with floral preservative.
Vase life is typically 10–14 days.
Excellent for drying—harvest before the flowers begin to fade and hang upside down in a dark, dry, well-ventilated area.