Masses of white, daisy flowers appear above the blue-grey foliage in June and July, often followed by a second flush in late summer. Naturally forming a dome shape, Rhodanthemum 'Casablanca' is drought resistant and makes an ideal companion to Mediterranean-style plants - particularly those with silvery foliage. It will thrive in a windswept environment, but it performs best when planted in a sunny site with poor to moderately fertile soil.