Spirea ‘Shirobana’

Scott's Nursery Ltd.

$24.99
Title

Why choose one flower colour when you can have three? ‘Shirobana’ is a horticultural marvel, celebrated for its unique ability to produce clusters of white, rose-pink, and deep crimson blossoms all on the same plant at the same time. This enchanting mix creates a vibrant, multi-colored tapestry that dances atop a neat, mounded form of bright green foliage, offering a playful and sophisticated look that keeps the garden lively all summer long.

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Plant Details

Mature Size:

2–3' H x 3' W

Zone:

3-9

Watering:

Medium

Foliage Type:

Deciduous

Growth Rate:

Fast

Light:

Full Sun

Plant Profile

Common Names:

Shirobana Spirea, Shirobana Japanese Spirea, Japanese Spirea

Scientific Name:

Spiraea japonica ‘Shirobana’

Type:

Ornamental Flowering Shrub

Growth Details:

  • Mature Size: Typically 2–3 feet tall and 3 feet wide.
  • Growth Habit: Upright, rounded, and dense mounded form.
  • Form: Compact and multi-stemmed.
  • Growth Rate: Fast.
  • Longevity: Expected to live for approximately 20 years.

Environmental Needs:

  • Exposure: Full sun to partial shade.
  • Soil Preferences: Adapts to most well-drained garden soils; thrives in slightly acidic to neutral pH.
  • Soil Tolerance: Highly adaptable to clay, rocky, or nutrient-poor soils.
  • Watering: Medium needs; once established, it offers some drought tolerance.

Special Features:

Unique multi-colored blooms; reblooming potential if deadheaded; highly deer and rabbit resistant.

Care Guide

Ornamental & Landscape Value

Seasonal Interest:

  • Bloom Information: Simultaneously produces white, pink, and red flowers in late spring to mid-summer.
  • Fall Colour: Foliage transitions to a striking coppery-bronze or dark burgundy in autumn.
  • Bark: Slender reddish-brown stems.
  • Fruit: Small, non-showy seed heads.

Garden Value:

Excellent for mass plantings, foundation accents, rock gardens, or as a low-maintenance groundcover.

Wildlife & Human Value:

  • Wildlife Value: Attracts butterflies, bees, and birds.
  • Human Value: Provides intense, multi-seasonal curb appeal for small gardens and high-end floral design.

Planting & Care Guide

Planting Considerations:

Best planted in spring or fall; space 3–4 feet apart to allow for its mature mounded spread.

Care:

  • Light Requirements: Best in full sun to maximize the stunning tri-color bloom production.
  • Moisture Requirements: Prefers average to moist conditions; do not allow the soil to dry out completely.
  • Maintenance, Fertilization: Fertilize in early spring with a balanced, slow-release fertilizer. Prune in late winter or early spring before new growth begins to maintain its compact shape.

Tolerances:

Deer, Rabbits, Urban Pollution, Clay Soil, and Salt.

Tips For Success:

Remove spent flower clusters (deadheading) throughout the summer to encourage a continuous flush of fresh white and pink blossoms.