Bulbous perennail with broad strappy semi-evergreen leaves and large blue flower heads on tall stems to 1m+ July-Aug
PVR. Large flower heads of mid violet-blue flowers over a long period from June-Sept. Ht 80-100cm. Strappy evergreen foliage may need winter protection.
Large heads of pale blue flowers with a darker cobalt-blue bar on tall strong stems July-Sept. Ht 90-120cm. Evergreen in milder locations.
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