Limelight Hydrangea (Hydrangea paniculata 'Limelight') is a popular, hardy (Zones 3-8), and low-maintenance deciduous shrub known for its massive, cone-shaped, lime-green flowers that turn white then pinkish-red by fall. It thrives in full sun to part shade, reaching 6-8 feet tall and wide with sturdy, upright stems that do not flop. 
Key Features and Care:
Blooms: Large, dense panicles that emerge lime-green, mature to white, and fade to pink/burgundy.
Growth Habit: Upright, multi-stemmed, and fast-growing, making it ideal for hedges, screens, and specimen planting.
Bloom Time: Mid-summer through late fall, with flowers that can be dried for arrangements.
Light Requirements: Full sun to partial shade.
Soil/Water: Adaptable to various soil types (acidic to alkaline), but prefers moist, well-drained soil.
Pruning: Blooms on new wood; best pruned in late winter or early spring to shape and manage size.
Hardiness: Extremely hardy (USDA Zones 3-8).