Hydrangea - Smooth

Hydrangea arborescens


PP#20,571; CBR#4166

Swipe to View More
The very large white mophead blooms of Incrediball hydrangea "} A specimen of Incrediball hydrangea covered in large white blooms A man holding Annabelle hydrangea in his left hand and Incrediball hydrangea in his right showing how much larger the Incrediball bloom is A curving hedge of several Incrediball hydrangea in full bloom in summer Closeup of a large bloom of Incrediball hydrangea Incrediball hydrangea in winter all brown and dormant but clearly showing its strong upright stems A very large specimen of Incrediball hydrangea covered in enormous white flowers with a yellow house with blue shutters in the background YouTube video describing the plant shown on this page
  • Strong stems
  • Extra large flowers
  • Native to North America

Literally, a huge improvement over 'Annabelle'!

Our goal in creating Incrediball® hydrangea was to develop a non-flopping version of 'Annabelle.' What we ultimately selected, though, was even better: a powerhouse of a plant that not only has strong, sturdy, supportive stems, but also extra large flowers. On mature plants, they can become as large as basketballs! Blooms age to a beautiful jade green through summer and fall. Don't let its good looks fool you, though - this North American native is super hardy and tough as nails.

Bronze Medal, Plantarium 2011
3 - 8 (-40°F/-40°C)
Full sun, Part sun
4 - 5'
4 - 5'
Finish Time
1 season
Bloom Time
Flower Color
Foliage Color
Liner Sizes
2 1/4", 4", Quick Turn


Grows well in most soils; avoid wet and poorly drained sites. Mulch is recommended in the landscape.


Blooms on new wood - cut back by about one-third its total height in early spring, just as the new growth begins to emerge on the stems. Smooth hydrangeas may be cut back harder, however, this prevents woody cells from developing, prohibiting the plant from achieving its maximum stem strength.


Versatile and showy, smooth hydrangeas offer dozens of landscape applications: foundation plantings, perennial gardens, hedges, cut flower gardens, naturalizing, pollinator and wildlife gardens.

Growing Tips

We recommend full sun for smooth hydrangeas in the cooler end of its hardiness range; afternoon shade is a good idea in warmer climates, however. The flower color of smooth hydrangeas is not influenced by soil chemistry. Makes an excellent cut flower, both cut and dried.