Caryopteris x Clandonensis Sterling Silver Bluebeard Shrub Plant. This shrub offers year-round charm, adding color, texture, and privacy to your outdoor space. It's a picturesque retreat in any season. Grown in our Specialist Nursery, this plant attracts bees and other beneficial pollinators. Position: full sun. Soil: moderately fertile, light, well-drained soil. Rate of growth: average. Flowering period: August to September. Hardiness: fully hardy. The contrast between the mid-blue flowers, which appear in late summer, and the aromatic, silvery grey foliage is very eye-catching. It makes this compact shrub ideal for gravel or Mediterranean style gardens. Alternatively, it can be woven through a mixed border to add an accent (and a shot of late color), or potted up and placed on a sunny patio. Garden 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.