Hydrangea arborescens 'Incrediball'

Hydrangea arborescens 'Incrediball': Giant White Snowballs on Sturdy Stems

Hydrangea arborescens 'Incrediball' is a Proven Winners® smooth hydrangea that delivers truly massive, rounded blooms with a clean, bright look in summer. Flowers emerge pale green, mature to white, then take on green tones again as the season winds down, so the display stays interesting for weeks. Those huge flower heads can reach up to 12” across and sit on sturdy new growth, giving the shrub a strong, upright presence in the garden. With a mounded habit and reliable performance, it brings classic hydrangea impact with a bolder, more modern finish.

Plant Characteristics:

• Height: 4–5’
• Spread: 3–5’
• Flower Colour: Pale green, maturing to white, then green at season’s end
• Flowering Period: Mid to late summer
• Foliage: Green, deciduous shrub foliage
• Sunlight Requirements: Full Sun to Part Shade
• Soil Requirements: Moist, well-drained soil

Uses and Benefits: A strong choice for borders, foundation plantings, and mass plantings where you want bold summer brightness and a full, rounded shrub shape. The oversized blooms make a striking focal point and are excellent for cutting, both fresh and dried. It also works beautifully as a repeating shrub along a fence line or walkway, creating a consistent rhythm of white bloom and green foliage through mid-summer.

Care Instructions: Water regularly during the first season to establish deep roots, then water deeply during hot, dry stretches to support bloom size and overall vigour. Prune in late winter or early spring to refresh the plant and encourage strong new stems, since smooth hydrangeas bloom on new wood. Mulch to conserve moisture and keep roots cooler in summer, and top-dress with compost in spring for steady growth.

History: Part of the Proven Winners® Incrediball® Series, Hydrangea arborescens 'Incrediball' was selected to deliver the classic smooth hydrangea look with a bigger bloom presence and sturdier growth. It has become a modern landscape staple, valued for its huge flower heads, strong summer show, and dependable garden performance.

Final Thoughts: When you want big, confident summer blooms that light up the landscape and hold their presence, Incrediball is a classic choice that always feels generous and complete.