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Clematis 'Perle d'Azur' derrière un banc de Lutyens dans le jardin de roses au Château de Sissinghurst Garden, près de Cranbrook, Kent Photo Stock - Alamy
Clematis 'Perle d 'Azur' - Clematis 'Perle d 'Azur' - Baumschule Horstmann
Old Bladbean Stud Gardens - Clematis “Perle d'Azur” is having a wonderful year with the two crowns on the west side dense with crepe paper petals in cornflower blue. New growth is
Classic Combination Planting: Clematis With Roses – Susan Rushton
Clematis for Every Spot | BBC Gardeners World Magazine