Species reference sheet / enquiry only
Hydrangea macrophylla 'Obsidian Storm Cloud'Obsidian Storm Cloud Hydrangea
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The Hydrangea macrophylla 'Obsidian Storm Cloud', commonly known as Obsidian Storm Cloud Hydrangea, is a dramatic and eye-catching deciduous shrub prized for its dark foliage and large, mophead blooms. Its flowers shift from deep blue to rich purple depending on soil pH, creating a striking contrast against its dark green to black-tinged leaves. Growing up to 1–1.5 meters tall and wide, this hydrangea is perfect for borders, garden beds, containers, or as a focal point in shaded gardens.
Specifications:
- Height: 1–1.5 meters
- Width: 1–1.5 meters
- Native to: Japan (species origin)
- Foliage: Dark green, often black-tinged; deciduous
- Growth rate: Moderate
Conditions:
- Soil: Prefers moist, well-drained, acidic to neutral soils; benefits from organic enrichment
- Light: Partial shade to dappled sunlight; tolerates morning sun with afternoon shade
- Water: Moderate; requires consistent moisture but avoid waterlogging
- Climate: Thrives in temperate and subtropical regions
Additional Features:
- Flowers: Mophead blooms in deep blue to purple tones; color varies with soil pH
- Form: Compact, bushy growth with rounded flower clusters
- Uses: Ideal for borders, feature planting, containers, or shaded garden beds
- Spacing: Plant 1 meter apart for dense displays or individual features
- Low Maintenance: Requires pruning of spent flowers and thinning of old stems in late winter
- Pest Resistance: Generally resilient; monitor for aphids or powdery mildew
- Frost Tolerance: Hardy in cool climates; protect young plants from severe frost
- Wildlife Attraction: Flowers attract pollinators like bees and butterflies
- Seasonal Appeal: Deciduous foliage provides summer color and seasonal flowers
- Versatility: Complements cottage, woodland, and formal garden styles
The Obsidian Storm Cloud Hydrangea is a bold and sophisticated choice for gardens, offering stunning seasonal color and year-round interest. Its unique foliage and vibrant blooms make it a standout feature in any landscape.
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