Spiky, steel-blue thistle-like flowers with feathery collars that add bold structure to borders and bouquets. Loved by pollinators and unbeatable in dried arrangements. A true perennial showstopper that thrives on neglect once established.
When to Sow: Sep - Oct & Feb - Apr ( best for natural stratification)
HOW TO SOW ERYNGIUM:
SEEDS NEED COLD DAMP STRATIFICATION
Sow seeds as soon as possible after receipt onto moist, free-draining seed compost and cover lightly with vermiculite. Autumn sowing allows seeds to experience natural winter cold.
Keep trays outdoors in a sheltered position or in an unheated greenhouse, ensuring the compost remains moist but not waterlogged. Germination can be slow and irregular, particularly where seeds require cold stratification. Seeds sown during warmer months may remain dormant until after the following winter. Pot on seedlings as they emerge and grow on before planting out in a sunny, well-drained position.
Avoid artificial heat, as this may cause deeper dormancy. Pot on seedlings once established and plant out into well-drained soil in a sunny position
Classification: Hardy Perennial
Expert Level: Intermediate (Slow to Germinate)
Germination Time: 3–6 Weeks (sometimes longer)
Flowering Time: May–JulSite: Full Sun
Soil Type: Poor to moderately fertile, well-drained
Soil Acidity: Neutral to Alkaline
Moisture: Dry to Medium
Care: Doesn’t like root disturbance — plant where it can stay
Use: Cut Flowers, Dried, Pollinator-Friendly Borders
Harvesting: Cut stems when bracts are fully coloured but before they fade
Days to Maturity: 120–150 Days
Vase Life: 10–12 Days (excellent dried)
Height: 90–100cm
Plant Spacing: 30cm