Always the most popular colour.
Includes: Campanula lactiflora 'Prichard's Variety', Echium 'Blue Steeple', Geranium 'Purple-Haze', Agapanthus 'Headbourne Hybrids', Libertia caerulescens, Lobelia 'Blue Cardinal', Meconopsis 'Lingholm', Nepeta parnassica, Veronica grandis and Penstemon eriantherus.
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