CARDINAL HUME – lilac-purple park rose - Harkness
On bright Cornish or Devon days, Cardinal Hume settles calmly into breezy family plots, forming a bushy, slightly spreading shrub that acts as a gentle windbreak while handling coastal gusts with strong root anchorage and well-managed moisture around its base in heavier soils. From the first season, clusters of mauve-purple, cup-shaped blooms open from near-black buds, bringing a soft, muscat-like fragrance that suits relaxed veranda seating and small, sheltered patios. As an own-root shrub, it offers a long-lived, recoverable framework; if weather or pruning go wrong, new shoots arise from the base, preserving its ornamental value. Low-maintenance by nature, with reliable disease resistance, it asks little more than sensible watering in severe dry spells and occasional deadheading for tidiness. Year by year it matures steadily – first consolidating roots, then building shoots, and by the third season showing its full character in your coastal-style garden.
Usage options
| Target area |
Reasoning |
| Small coastal family garden shrub border |
This shrub’s moderate height and slightly spreading habit create a compact, protective presence that suits the scale of typical front or back gardens near the sea, giving structure without overshadowing neighbouring plants, ideal for beginners and time-pressed hobby gardeners. |
| Salt-tolerant veranda containers (40–60 litres) |
In large pots it forms a dense, floriferous mound, with own-root resilience helping it tolerate breezy, saline air on raised terraces; choose deep containers of at least 40–50 litres for stable moisture and strong anchoring, perfect for coastal veranda owners. |
| Low-maintenance hedge or informal screen |
Planted at hedge spacing, the bushy, leafy framework knits into a loose barrier that filters wind and offers privacy, while good resistance to common rose diseases keeps care simple for those who prefer minimal spraying and straightforward seasonal trimming, suiting low-maintenance garden families. |
| Long-season feature near seating areas |
Remontant flowering with abundant repeat flushes means colour and scent return through the season, so a single shrub can carry a border visually from early summer well into autumn, rewarding consistent but undemanding care, attractive to busy urban homeowners. |
| Shingle and heavy-soil coastal beds |
The shrub’s robust framework and reliable root system perform well where wind and rain are frequent, provided drainage is sensibly managed in heavier clay beneath shingle or gravel mulch, giving confidence to gardeners dealing with exposed, weather-beaten plots in the South West. |
| Shaded or part-sun corners of the garden |
Tolerance of partial shade lets you place it where full sun is limited, such as east- or west-facing aspects by fences and walls, still delivering good flower production without demanding the very brightest spot, a reassurance for small-plot and courtyard gardeners. |
| Long-lived, future-friendly family planting |
As an own-root rose it regenerates naturally from the base, avoiding issues of ageing or failing grafts and maintaining its variety-true canopy over many years, so one planting can mature with the family and remain dependable despite changing weather patterns, valuable for long-term planners. |
| Year-by-year developing feature shrub |
This cultivar rewards patience: the first year concentrates on root establishment, the second brings stronger shoots and structure, and by the third season it reaches its full ornamental effect as a rounded, floriferous shrub, suiting thoughtful gardeners who enjoy gradual transformation. |
Styling ideas
- Harbour-Veranda Mix – Combine Cardinal Hume in a 50–60 litre container with trailing silver foliage and a low Festuca border to echo shingle tones – ideal for coastal-style balcony owners.
- Shingle-Hedge Softener – Thread a loose row along a front shingle drive to soften boundaries, underplanting with sea kale and low grasses – suitable for families wanting privacy without harsh fencing.
- Tea-Nook Focus – Place a single shrub near a sheltered seating corner, paired with lavender for scent layering – perfect for homeowners imagining afternoon tea after seaside walks.
- Part-Shade Retreat – Use in an east-facing border with Clematis ‘Fairy Slippers’ and soft perennials to brighten less sunny spots – good for small-garden gardeners managing limited direct light.
- Future-Friendly Frame – Build a long-lived trio as a backdrop for a children’s play lawn, relying on its own-root longevity and simple upkeep – fitting for busy families planning a durable garden.
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Park and shrub rose group; registered as HARregale, marketed as Cardinal Hume – lilac-purple park rose. American Rose Society exhibition name: Cardinal Hume, shrub rose category. |
| Origin and breeding |
Bred by Jack Harkness, R. Harkness & Co. Ltd., United Kingdom. Parentage combines complex hybrid seedlings with Rosa californica and ‘Frank Naylor’. Introduced and registered in 1984. |
| Awards and recognition |
Recipient of the Royal National Rose Society Certificate of Merit in 1984, reflecting reliable garden performance and ornamental quality under independent trial conditions. |
| Growth and structural characteristics |
Bushy, slightly spreading shrub reaching about 80–130 cm in height and 120–200 cm in spread. Dense, dark green, slightly glossy foliage; moderately thorny stems with a stable, branching framework. |
| Flower morphology |
Medium-sized, double, cup-shaped blooms with 26–39 petals, produced in clusters. Remontant habit with a notably abundant second flush, giving extended seasonal interest when lightly deadheaded. |
| Colour data and phenology |
Deep lilac-purple with reddish tones; buds near-black crimson, opening rich crimson then maturing to dark mauve-purple before fading to purplish-brown. Colour remains deeper in cooler conditions, fading faster in warmth. |
| Fragrance and aroma |
Medium-strength, noticeable perfume with a soft, muscat-like character. Scent is best appreciated near seating areas or paths where air movement can carry it gently through the garden. |
| Hip characteristics |
Occasional spherical hips, 8–13 mm in diameter, coloured bright scarlet-red. They offer modest late-season ornamental value when blooms are allowed to fade and set rather than being deadheaded. |
| Resistance and winter hardiness |
Good overall disease resistance with recorded resistance to black spot, powdery mildew and rust. Hardy approximately to -21 to -18 °C (RHS H7, USDA zone 6b, Swedish zone 3) with routine care. |
| Horticultural recommendations |
Suited to beds, hedges, specimen planting and urban spaces. Prefers well-drained soil with regular watering in prolonged drought. Recommended spacings: 130–210 cm depending on hedge, mass, or specimen use. |
CARDINAL HUME – lilac-purple park rose - Harkness offers long-season flowering, low-maintenance resilience and own-root longevity for relaxed coastal-style family gardens, well worth considering as a reliable, future-friendly feature.
