Eryngium x zabelii 'Big Blue' Sea Holly is a robust, clump-forming perennial with erect branched stems and spiny, highly divided grey-green leaves. Flowering in summer, it has large thimble shaped flower-heads with spiky silvery-blue bracts which can also be very attractive if left on the plant after the flowering period. Will grow well in poor, moderately fertile, well-drained soil in full sun avoiding wet winter conditions. Cut back any dead foliage throughout the season but spent flowers can be left for winter interest. Cut flowers before they open for floristry purposes.
 
Foliage: Deciduous
 
Height: 0.3 - 0.8m 
Spread: 0.1 - 0.5m in 2 to 5 years
 
Planting Location: Banks and Slopes Drought Resistant Cut Flowers Flower borders and beds Architectural City & Courtyard Gardens Coastal Cottage & Informal Garden Gravel Garden Patio & Container Plants Prairie Planting

 
The pictures in this listing are examples of the available plant at maturity and do not indicate anything in regards to size of plant at the point of sale
 
Strong plants grown in a 9cm pot for planting immediately- all of a size to flower in their first summer (plastic pots removed when possible, so they can be reused)