Incrediball Hydrangea features bold balls of white flowers at the ends of the branches from mid to late summer. The flowers are excellent for cutting. It has dark green foliage throughout the season. The heart-shaped leaves do not develop any appreciable fall colour. Landscape Attributes Incrediball Hydrangea is a multi-stemmed deciduous shrub with a more or less rounded form. Its strikingly bold and coarse texture can be very effective in a balanced landscape composition. This shrub will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. Incrediball Hydrangea will grow to be about 5 feet tall at maturity, with a spread of 5 feet. It tends to be a little leggy, with a typical clearance of 1 foot from the ground. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 20 years. This shrub does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out.