The Limelight Hydrangea (tree form) is a popular, hardy, deciduous shrub trained into a small tree (6–8 ft tall, 6–7 ft wide) featuring massive lime-green panicle blooms that turn white, then pink and burgundy from summer to fall. Thriving in full sun to part shade (ideally morning sun), it requires well-drained soil, is hardy in zones 3-9, and blooms on new wood. 
Key Characteristics & Care:
Flowers: 8–12 inch cone-shaped blooms (panicles) change from chartreuse to white, then pinkish-red.
Growth Habit: Upright, small tree, often grafted onto a single trunk, making it perfect for containers or as a focal point.
Light Requirements: Thrives in full sun (6+ hours) but tolerates part shade.
Soil: Adaptable, but prefers well-drained, moist soil.
Pruning: Best pruned in late winter or early spring to encourage vigorous summer blooms on new growth.
Maintenance: Generally low-maintenance, but requires consistent moisture during dry, hot periods.
Hardiness: Highly cold-hardy (Zones 3-9).