30
Once established, Salvia 'African Sky' grows into a dense, well-branched plant with good drought resistance. Although perennial, this half-hardy Salvia will benefit from some winter protection. Over time, beautiful sky-blue flowers overwhelm the tall stems of this stunning perennial. Its deep, fragrant foliage covers the woody stems, which provides a striking contrast to the open-mouthed blooms. Plant it in a protected border in very mild climates, or grow it in patio planters that can be moved to a frost-free location during the winter. Height: 75cm (29). Spread: 60cm (24).