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Rock-N-Roll™ Hydrangea

Hydrangea macrophylla 'COF HM3'

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Rock-N-Roll Hydrangea (Hydrangea macrophylla 'COF HM3') at Lakeshore Garden Centres

Rock-N-Roll™ Hydrangea flowers

Rock-N-Roll™ Hydrangea flowers

(Photo courtesy of NetPS Plant Finder)

Height:  5 feet

Spread:  5 feet

Sunlight:  partial shade 

Hardiness Zone:  4a

Other Names:  French Hydrangea, Bigleaf Hydrangea

Description:

Gorgeous mop-heads of purplish-pink or periwinkle blue, depending on soil pH, bloom on both old and new wood all summer long; glossy deep green leaves turn red in fall to offer year-round interest

Ornamental Features

Rock-N-Roll™ Hydrangea features showy balls of hot pink flowers with blue overtones at the ends of the branches from early summer to mid fall. The flowers are excellent for cutting. It has forest green deciduous foliage. The glossy pointy leaves turn outstanding shades of red and in the fall.

Landscape Attributes

Rock-N-Roll™ Hydrangea is a multi-stemmed deciduous shrub with a more or less rounded form. Its relatively coarse texture can be used to stand it apart from other landscape plants with finer foliage.

This shrub will require occasional maintenance and upkeep, and should only be pruned after flowering to avoid removing any of the current season's flowers. It has no significant negative characteristics.

Rock-N-Roll™ Hydrangea is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • Hedges/Screening
  • General Garden Use
  • Container Planting

Planting & Growing

Rock-N-Roll™ Hydrangea will grow to be about 5 feet tall at maturity, with a spread of 5 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front, and is suitable for planting under power lines. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 20 years.

This shrub should be grown in a location with partial shade and which is shaded from the hot afternoon sun. It requires an evenly moist well-drained soil for optimal growth. To help this plant achive its best flowering performance, periodically apply a flower-boosting fertilizer from early spring through into the active growing season. It is not particular as to soil type, but has a definite preference for acidic soils. It is highly tolerant of urban pollution and will even thrive in inner city environments, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone in both summer and winter to conserve soil moisture and protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America.

Rock-N-Roll™ Hydrangea makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Because of its height, it is often used as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden. Be aware that in our climate, most plants cannot be expected to survive the winter if left in containers outdoors, and this plant is no exception. Contact our experts for more information on how to protect it over the winter months.

This plant is not reliably hardy in our region, and certain restrictions may apply; contact the store for more information.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Accent  Massing  Screening  Garden  Container 
Applications
Flowers  Fall Color 
Ornamental Features