All panicle hydrangeas love the sun, and 'Limelight' is no different. These hydrangeas thrive in full to partial sun. This means they need around six hours or more of sun per day. Limelight is a slightly more compact cultivar that typically grows to 6-8' tall and as wide. It is noted for producing large, dense, upright, cone-shaped panicles (to 8” across) of mostly sterile flowers that change color on the shrub as they mature.