Hydrangea Macrophylla – Royal Red Purple®™ (PBR)

Bigleaf Hydrangea | Deep red-purple mophead blooms

‘Royal Red Purple®™’ is a striking bigleaf (mophead) hydrangea cultivar known for its large, richly-coloured flower heads in shades of deep red-purple through to magenta. With sturdy upright stems, lush dark green foliage and excellent branching, this cultivar creates a bold statement in borders, containers and as a cut or dried flower shrub.

Plant Care

Sun: Partial shade (best: morning sun / afternoon shade). Shelter from harsh midday sun.
Soil: Moist, fertile, well-drained. Although mophead hydrangeas are often affected by soil pH, this cultivar maintains vivid red-purple flowers especially in neutral to slightly alkaline soils.
Water: Moderate — keep the root-zone evenly moist, especially during hot or dry spells and when container-grown.
Fertilizer: Balanced feed in spring; optional light top-up mid-summer to sustain bloom.
Pruning: Light only — remove spent heads and dead or weak stems after flowering. Avoid heavy pruning, as mopheads flower on old wood.
Top tip: Mulch around the base to conserve moisture and regulate soil temperature; avoid overhead watering during strong midday sun to protect blooms.

Specifications

Botanical name: Hydrangea macrophylla ‘Royal Red Purple®™’
Common name: Bigleaf / Mophead Hydrangea
Growth habit: Upright, compact and well-branched shrub
Size: Approximately ±0.8–1.0 m H × ±0.8–1.0 m W (in suitable garden conditions)
Bloom time: Late spring through early autumn
Flower colour: Deep red-purple mopheads (rich and vivid)
Bloom (head) size: Approximately ±15–20 cm diameter (medium-large mopheads)
Uses: Borders, feature shrub, large containers, cut and dried flowers

Plant Breeders’ Rights (PBR)

This cultivar is protected under Plant Breeders’ Rights. Propagation is strictly prohibited without written authorisation. Plants are supplied for ornamental use only.

Quick Facts

• Large, bold mophead blooms in deep red-purple—excellent for visual impact

• Compact habit combined with floriferous nature—ideal for garden beds or substantial containers

• Maintains rich colour and form with appropriate care throughout its flowering season