Hydrangea macrophylla 'Diamond Rouge'Diamond Rouge Hydrangea

The Hydrangea macrophylla ‘Diamond Rouge’, or Diamond Rouge Hydrangea, is a deciduous shrub renowned for its stunning cone-shaped flower clusters. Blooming in midsummer, the flowers transition from pure white to rich pink and then to deep red, creating a spectacular multi-seasonal display. Its compact growth habit, reaching 1–1.2 meters tall, makes it perfect for borders, mixed garden beds, or as a feature in containers.

Low-maintenance and striking, Diamond Rouge adds vibrant color and elegance to gardens and landscapes.

Specifications:

• Height: 1–1.2 meters
• Width: 1–1.2 meters
• Native to: Cultivar origin from Hydrangea species native to Japan and Korea
• Foliage: Medium green, ovate leaves; deciduous
• Growth rate: Moderate

Conditions:

• Soil: Prefers moist, well-drained, slightly acidic to neutral soils enriched with organic matter
• Light: Full sun to partial shade; blooms best in partial shade in hot climates
• Water: Moderate; water regularly, especially in dry periods
• Climate: Thrives in temperate and subtropical regions

Additional Features:

• Flowers: Cone-shaped clusters transition from white to pink to red; blooms midsummer to autumn
• Form: Compact, bushy habit with showy flowers
• Uses: Ideal for borders, mixed garden beds, hedges, or containers
• Spacing: Plant 1 meter apart for dense coverage or individual displays
• Low Maintenance: Requires minimal pruning; remove spent blooms to encourage new growth
• Pest Resistance: Hardy and generally pest-free
• Seasonal Appeal: Spectacular blooms in summer and autumn; foliage provides interest until dormancy
• Versatility: Complements cottage, formal, and modern garden styles

The Diamond Rouge Hydrangea is a bold and versatile shrub, perfect for adding vibrant color, texture, and seasonal beauty to gardens and outdoor spaces.