Panicle hydrangeas ( Hydrangea paniculata ) often develop a tall , open - coronate cast as they mature , earning them the common name " tree hydrangea . " These gaudy , deciduous shrubs or diminished trees uprise best in USDA plant life hardiness geographical zone 3a to 8b , where they are often rise in groups as a hedge or concealment or alone as a focal gunpoint in the garden .
Several cultivated varieties of tree hydrangea are widely available in garden centers . These cultivar produce flowers of different colors and have varying degrees of cold hardiness . However , all tree hydrangeas divvy up a alike ontogeny use that helps them stand out from other hydrangea varieties .
About Hydrangea Trees
- Most panicle hydrangeas reach a mature height of 8 to 10 feet , although some can reach a height of up to 25 feet . * * They have a course tree diagram - like build , which can be further heighten with the right pruning to lift the poll .
The outer branch produce showy efflorescence heads in a change of colors , although creamy blank and green flowers are most common . The bloom time of panicle hydrangea starts in mid - summer and extends into fall , when flowers reposition coloring material to pinkish - brown .
Panicle hydrangeas grow best in full Dominicus or partial tint . Fertile , well - drain grunge is serious for growing these vigorous bush . Unlike some other hydrangea , tree - form hydrangea do not tolerate alkaline soil and need neutral to mildly acidic dirt pH to grow well .
Varieties of Hydrangea Trees
12 of types of hydrangea tree are available to home cultivator . All share a like growth habit , but they range in size of it from dwarf , tree diagram - like shrub to small trees .
Limelight Hydrangea
Limelight hydrangea bush ( Hydrangea paniculata’Limelight ' ) are the most popular and widely grown tree diagram hydrangea . This variety grows best in USDA plant hardiness zones 3 to 9 , where it provides fall colour with its football - shape clump of pallid chartreuse blossom .
Limelight hydrangea trees withstand drought and will brook coarse wintertime weather , so they are an adaptable alternative for gardeners in many different growing zone and mood .
Tardiva Hydrangea
Tardiva hydrangea plants ( Hydrangea paniculata’Tardiva ' ) abide out among other tree diagram hydrangeas with their color - changing flowers , which shift from creamy white to purplish - pink as they mature . This showy hydrangea bush turn best in zones 3 to 8 , where it will quickly reach a mature tallness of 8 to 12 feet .
The flowers of the Tardiva hydrangea tree are less densely packed than those of other panicle hydrangeas , which gives the plant an airy visual aspect .
Pee-Gee Hydrangea
Pee - Gee hydrangea ( Hydrangea paniculata’Grandiflora ' ) tree can hit a mature height of 10 to 20 foot with an equal ranch . It grows best in zones 3 to 8 , where it produces conical creamy - whitened flush clustering from previous summertime to former tumble .
Pee - Gee hydrangeas are a big form that need wise pruning to make a tree - like shape .
Strawberry Sundae® Hydrangea
Strawberry Sundae ® hydrangeas ( Hydrangea paniculata’Rensun ' ) only reach out a matured top of 4 to 5 feet , wee-wee them a little tree hydrangea variety . This cultivar grow safe in zones 4 to 8 , where it fits into pocket-size areas of the garden where larger Sir Herbert Beerbohm Tree hydrangeas wo n’t accommodate .
Strawberry Sundae hydrangeas make their name with their color - changing bloom clump , which start out white and move around a vivid hemangioma simplex pink as the season progresses .
Vanilla Strawberry Hydrangea
Vanilla Strawberry hydrangeas ( Hydrangea paniculata’Renhy ' ) arise best in USDA zone 4 to 8 , where they reach a ripe height of 6 to 7 feet .
These attain flowering Sir Herbert Beerbohm Tree or shrubs bloom from mid - summertime into fall , get blossom that start out a pure creamy colour before stir slowly to pink and then finally burgundy .
Pinky Winky Hydrangeas
Pinky Winky ® panicle hydrangeas ( Hydrangea paniculata’Pinky Winky ' ) bring forth two - pure tone flowers with pinkish blooms at the groundwork and creamy whitened bloom at the point . They mature good in geographical zone 3 to 8 , where they reach mature height of 6 to 8 feet .
Pinky Winky hydrangea respond well to pruning and can easy be trained to take on a Sir Herbert Beerbohm Tree - same cast .
Growing Hydrangea Trees
Most panicle hydrangea trees share standardized growing and forethought requirements . They take full sun in the morning and some partial afternoon shadiness . As a general rule , a hydrangea flowers best with shade on its roots and sun on its foliage .
Tip
sanitise your pruning shears by dip the blade in family disinfectant cleaner , which will kill off harmful bacteria and fungi .
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