Ornatec InternationalSpecies reference sheet · ornatecinternational.com
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
- Height1–1.2 meters
- Width1–1.2 meters
- Native toCultivar origin from Hydrangea species native to Japan and Korea
- FoliageMedium green, ovate leaves; deciduous
- Growth rateModerate
Conditions
- SoilPrefers moist, well-drained, slightly acidic to neutral soils enriched with organic matter
- LightFull sun to partial shade; blooms best in partial shade in hot climates
- WaterModerate; water regularly, especially in dry periods
- ClimateThrives in temperate and subtropical regions
Additional Features
- FlowersCone-shaped clusters transition from white to pink to red; blooms midsummer to autumn
- FormCompact, bushy habit with showy flowers
- UsesIdeal for borders, mixed garden beds, hedges, or containers
- SpacingPlant 1 meter apart for dense coverage or individual displays
- Low MaintenanceRequires minimal pruning; remove spent blooms to encourage new growth
- Pest ResistanceHardy and generally pest-free
- Seasonal AppealSpectacular blooms in summer and autumn; foliage provides interest until dormancy
- VersatilityComplements 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.
Availability by project review. Sizes, quantities, origin and export readiness are confirmed after your plant schedule is reviewed against destination, timing and quarantine requirements. MEWA certified for supply into Saudi Arabia; Australian Export Registered Establishment.
Enquiries: sales@ornatecinternational.com
310 Donkin Rd, Utchee Creek QLD 4871, Australia
Prepared 22 July 2026