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Lightning Strike™ Spirea

Spiraea japonica 'Conalex'

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Lightning Strike Spirea (Spiraea japonica 'Conalex') at Lakeshore Garden Centres

Lightning Strike™ Spirea in bloom

Lightning Strike™ Spirea in bloom

(Photo courtesy of NetPS Plant Finder)

Lightning Strike Spirea (Spiraea japonica 'Conalex') at Lakeshore Garden Centres

Lightning Strike™ Spirea

Lightning Strike™ Spirea

(Photo courtesy of NetPS Plant Finder)

Height:  3 feet

Spread:  4 feet

Sunlight:  full sun 

Hardiness Zone:  4a

Description:

This variety features colorful pink flower clusters over most of the summer, on a dense, rounded compact plant with bright green leaves; bronze fall color; resists burning in full sun; a fantastic garden focal point in summer

Ornamental Features

Lightning Strike™ Spirea features showy clusters of pink flowers with red eyes at the ends of the branches from late spring to late summer. It has attractive green deciduous foliage which emerges chartreuse in spring. The serrated pointy leaves are highly ornamental and turn an outstanding coppery-bronze in the fall.

Landscape Attributes

Lightning Strike™ Spirea is a multi-stemmed deciduous shrub with a more or less rounded form. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.

This shrub will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. It is a good choice for attracting butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.

Lightning Strike™ Spirea is recommended for the following landscape applications;

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

Planting & Growing

Lightning Strike™ Spirea will grow to be about 3 feet tall at maturity, with a spread of 4 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 20 years.

This shrub should only be grown in full sunlight. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America.

Lightning Strike™ Spirea 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
Characteristics
Massing  Screening  Garden  Groundcover  Container 
Applications
Flowers  Foliage Color  Fall Color  Plant Form  Attracts Wildlife 
Ornamental Features