Physocarpus ‘SMPOTW’ This stunning garden shrub is a significantly more compact variety; foliage emerges a wine-red and matures to a deep reddish-purple, contrasting the showy white flowers in spring; also has interesting peeling bark; an excellent choice for a smaller area. Height:  4 feetSpread:  4 feetSunlight:  partial shade to full sun Zone 3