Panicle Hydrangea (Hydrangea paniculata) is a cold-hardy, deciduous shrub prized for its long-lasting, cone-shaped panicles of creamy white flowers that open in mid to late summer and often age to pink or deep rose in fall, offering reliable seasonal interest in Willamette Valley gardens. Easy to grow in sun to part shade in moist, well-drained soil, it tolerates drier sites and more sun than other hydrangeas, responds well to late-winter pruning to control size (many cultivars 6–15' tall), and makes an excellent low-maintenance specimen, informal hedge, or cut-flower source.