Great article here on one of my favorite native shrubs, Ninebark (Physocarpus opulifolius
This is truly a four season shrub. New growth emerges (on most cultivars) a bright chartreuse, changing to a beautiful reddish-burgundy through summer and fall. By early summer the arching branches are smothered in clusters of showy white flowers. Then by winter, the leaves drop the showcase attractive exfoliating bark, not unlike that of the river birch. Ninebark is quite tolerant of whatever situation you give it, but does best in full sun and average to moist, well drained soil.