Hydrangea macrophylla, commonly called big leaf hydrangea, is a deciduous shrub with a rounded habit that, in the St. Louis area, typically grows 3-6’ tall and as wide unless damaged by harsh winters or pruned smaller. It generally features serrate, obovate to elliptic, dark green leaves (4-8” long) and large clusters of long-blooming summer flowers in either lacecap form (flattened flower clusters of small fertile florets with scattered showy sterile florets often forming a marginal ring) or mophead form (globose flower clusters of mostly showy sterile florets). 'David Ramsey' is an upright mophead cultivar that grows on strong stems to 4-5' tall and to 5-6' wide. It typically blooms on old wood in late spring with repeat bloom on new wood from summer often into fall if spent flowers are regularly deadheaded.