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?Sterling Silver? is a fantastic Bluebeard, that flowers from August to October. It generates clusters of small purple blooms, that form in tidy bunches above a compact growing form of silver-green, delicate foliage. A magnet for pollinating insects, be sure to position your Caryopteris in cottage and wildlife themed spaces, whilst directed in full sun. This shrub will perform well and develop in height to 60cm, along with a spread of 50cm.