Bluebeard

Clusters of piercing dark blue flowers in August and September and slightly toothed, aromatic, grey-green leaves. This splendid, dark blue form of 'bluebeard' is perfect for the front of a sunny shrub or mixed border. Strongly upright in habit, where temperatures fall below -15°C it's best grown against a warm, south or west-facing wall.Position: full sunSoil: moderately fertile, light, well-drained soilRate of growth: average Flowering period: August and September Flower colour: dark blueOther features: highly attractive to butterflies and beesHardiness: fully hardyGarden care: In March prune all of the flowered stems back hard to the permanent framework. After pruning apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost around the base of the plant
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