Powis Castle Wormwood is a fragrant and drought-tolerant bushy sub-shrub highly valued for its fern-like, silvery-white foliage that easily blends with bulbs and  other perennials. This versatile spreader thrives in poor or moderately fertile soils, and makes an excellent focal point as a single speciman as well as fitting beautifully into perennial beds and herb gardens.  Award of Garden Merit, Royal Horticultural Society, 1993.