Introduction & History

Penelope stands as one of the crowning achievements of the Reverend Joseph Pemberton, the English clergyman who essentially created the hybrid musk class of roses. Introduced in 1924, Penelope opens with warm salmon-pink buds that unfurl into semi-double, creamy pink blooms borne in magnificent, arching trusses that scent the entire garden with a heady, sweet musk fragrance. As the flowers age, they fade gracefully to creamy white, while the cluster continues to produce new buds in a warm contrast. What sets Penelope apart from many hybrid musks is her outstanding autumn display: not only does she rebloom freely, but her unfaded flowers develop into large, coral-pink hips that persist into winter, creating a second season of ornamental beauty. Reliable, fragrant, and handsome in every season, Penelope embodies everything the hybrid musk class was meant to be.

Breeding History

Bred by Reverend Joseph Hardwick Pemberton in Havering-atte-Bower, Essex, England, and introduced in 1924. Penelope's recorded parentage is Ophelia x an unnamed seedling, though this may be simplified. Pemberton was a former president of the National Rose Society (now Royal National Rose Society) who devoted his retirement to creating garden-worthy shrub roses with musk-scented cluster blooms. Penelope earned the Royal Horticultural Society Award of Garden Merit and is widely considered one of the three finest Pemberton hybrid musks alongside Cornelia and Felicia. The name follows Pemberton's pattern of classical and literary names.

Flower Form & Fragrance

Semi-double flowers with 18-24 petals, each bloom 6-8 cm across. Buds are salmon-pink, opening to creamy pink and fading to near-white. Blooms are borne in large, airy trusses of 10-30+ flowers on strong stems. Golden stamens are prominently displayed when flowers open, adding to the charm. Fragrance is strong, sweet, and musky with honey undertones — a classic hybrid musk scent that carries well in the garden. The scent is most intense in warm, humid conditions.

Garden Design & Uses

Superb as a large specimen shrub, informal hedge, or trained on a pillar. The salmon-to-cream color range blends beautifully with virtually any companion. Plant with blue geraniums, lavender, and nepeta for classic English garden combinations. The coral-pink autumn hips pair magnificently with ornamental grasses and autumn foliage. Use near garden seating for fragrance enjoyment. Excellent for mixed borders where its size provides structure.

Growth Habit & Hardiness

Large, arching shrub reaching 150-200 cm tall and 150-180 cm wide. Growth is vigorous with strong, arching canes forming an elegant, rounded silhouette. Foliage is large, dark green, semi-glossy, and generally healthy, with bronze-red tints on new growth. Thorn density is moderate. The plant develops a substantial framework over time, becoming increasingly impressive with age. Can be managed as a smaller shrub with harder pruning.

Climate & Hardiness

Hardy in USDA zones 5-9. Cold tolerance to approximately -25°C with mulch protection. Heat tolerance is moderate; performs best in climates with moderate summers. The delicate pink coloring fades faster in extreme heat. Rain tolerance is good for semi-double flowers, which shed water readily. Performs superbly in English and maritime climates. Tolerates some coastal exposure.

Seasonal Care Calendar

Planting & Container Growing

Prefers rich, well-drained soil with pH 6.0-6.5. Deeply prepared, fertile soil produces the most vigorous plants and largest flower trusses. Space at least 120-150 cm from other shrubs. Plant grafted specimens with the bud union 5 cm below soil level in cold climates. Mulch generously. Penelope responds well to generous compost and organic mulching.

Container Growing

Feasibility: Difficult due to its large, vigorous growth habit. Only suitable for very large containers (60+ cm) on patios or terraces. Requires rich potting mix, consistent watering, and regular feeding. The arching habit is best appreciated in the ground. If container-grown, prune to maintain a manageable size. Rating: Not recommended except for experienced growers with large containers.

Seasonal Care & Pruning

Spring: Prune lightly, removing dead and crossing wood. Shorten side shoots by one-third. Apply generous spring fertilizer and thick mulch. Summer: Water deeply during dry periods. Deadhead some spent trusses to encourage rebloom but leave some for hip formation. Feed in midsummer. Autumn: Enjoy the repeat bloom and developing coral-pink hips. Stop feeding. Winter: Protect base with mulch in zones 5-6. Leave hips for winter interest and bird food.

Common Mistakes to Avoid

1. Over-pruning — hybrid musks bloom on mature wood and should be pruned lightly. 2. Planting in too small a space; this is a substantial shrub. 3. Deadheading all spent flowers, thereby removing the ornamental autumn hips. 4. Underfeeding a vigorous plant that demands good nutrition for its heavy bloom production. 5. Planting in deep shade where it will stretch and produce few flowers.

Propagation

Semi-ripe cuttings taken in late summer root moderately well. Use 15-18 cm cuttings from the current season's wood. Rooting hormone and bottom heat improve success rates. Hardwood cuttings taken in late autumn can succeed in a sheltered cold frame. Budding onto Rosa laxa rootstock is the standard commercial method. Layering is possible for low branches. Difficulty: Moderate. Own-root plants establish more slowly than grafted ones.

Diseases & Pests

Disease resistance is moderate to good. Black spot may appear in wet seasons but is less severe than on many hybrid teas. Powdery mildew can occur in dry conditions with poor air circulation. Downy mildew is occasionally reported. The semi-double flowers are relatively rain-tolerant. Aphids target new growth and flower buds. Caterpillars and sawfly larvae may damage foliage. Preventive spraying is advisable in disease-prone areas.

Cut Flowers & Exhibition

The large, fragrant trusses make magnificent cut flowers. Cut stems when the first few blooms in a truss are open. The salmon-pink buds alongside creamy open flowers create a beautiful multi-toned display. Condition in warm water with preservative. Vase life is 5-7 days. The strong musk fragrance fills a room. One of the best hybrid musks for cutting.

Collector & Exhibition Notes

Essential for any hybrid musk collection. Penelope is one of the defining cultivars of the class and a key Pemberton introduction. RHS Award of Garden Merit holder. Widely available but always sought after by collectors assembling a complete Pemberton collection. Show-quality trusses are impressive at rose exhibitions. The autumn hips add exhibition value in the fruiting category.

Comparison with Similar Roses

Compared to Cornelia, Penelope offers a more restrained color palette (salmon to cream versus coppery apricot) and better autumn hips. Against Buff Beauty, Penelope has a more open, semi-double flower form and slightly better disease resistance. Compared to Ballerina, Penelope has larger individual flowers and stronger fragrance, while Ballerina offers a more profuse display of tiny blooms.

Heritage & Conservation

Penelope is safely preserved in numerous public rose collections including the Royal National Rose Society gardens, Mottisfont Abbey (National Trust), and many botanical gardens worldwide. It remains widely available commercially. As a key Pemberton hybrid musk, it is of significant historical importance in the development of modern shrub roses.

Cultural Significance

Penelope exemplifies the Reverend Pemberton's vision of creating garden-worthy shrub roses that combined beauty, fragrance, and practicality. Named from classical mythology (Penelope, wife of Odysseus), it reflects the educated Victorian-Edwardian naming traditions Pemberton favored. The hybrid musk class he created has influenced modern shrub rose breeding profoundly, particularly David Austin's English Roses.

Frequently Asked Questions