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Large blue flowers in summer, evergreen tapering leaves. this perennial will bear, from a young age, blue or white flowers in bunches at the end of long rigid and upright stems. Flowering can begin as early as May in the south of France, appearing later in summer, in more northern areas. A colourful and exotic touch to a garden. Compact and spreading tuft with the long dark green leaves. Excellent in containers on a balcony or terrace, in flowerbeds or rock gardens, in a sunny exposure. Some varieties will maintain their leaves but need to be sheltered in winter in certain regions.