Sorbaria sorbifolia 'Sem' (PBR) is a compact deciduous shrub valued for its finely cut foliage and exceptional seasonal colour changes. New growth emerges in spring with soft pink and bronze tones before maturing to fresh green in summer, then finishing the season with rich red and orange shades in autumn. Naturally neat and low-growing, it forms a dense mound that works well in borders, mass planting, or as informal ground cover. Fully hardy and easy to manage, 'Sem' (PBR) thrives in moist soil and responds well to pruning, making it a dependable choice for adding long-lasting foliage interest and colour through much of the year.