£7.99 Eryngium x zabelii 'Big Blue' - 2Ltr
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(Sea holly 'Big Blue')
A deciduous perennial with an upright habit forming a clump of silver/green spiky foliage. In summer it produces sturdy candelabra stems bearing large, steely blue flower heads that electrify a border, and make outstanding cut flowers too.
Grow in well-drained soil in full sun.
Eventual mature plant size :