Devoniensis (Magnolia Rose)

Devoniensis (Magnolia Rose) - Complete Rose Growing Guide

Devoniensis

Complete Rose Growing Guide – Tea Old Garden Rose
📖 20 min read
Tea • Old Garden Rose
Devoniensis botanical illustration Tea rose botanical illustration Tea
🌹
Old Garden Rose
🏷️
Tea
Creamy White
Strong Fragrance
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Foster (1838)
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USDA Zones 7–10

Introduction & History

Known affectionately as the 'Magnolia Rose' for the creamy white, magnolia-like quality of its sumptuous blooms, 'Devoniensis' stands as one of the most beautiful and historically significant Tea roses ever bred. Raised by Foster of Devonport, England, and introduced in 1838, it was among the earliest Tea roses bred in Britain rather than imported from French nurseries, and its appearance marked an important milestone in English rose breeding. The blooms are large, full, and deeply cupped, opening to a flat, quartered rosette of creamy white petals suffused with pale buff and apricot tones at the center, possessing a silky, almost translucent texture that is mesmerizing in soft light. The fragrance is magnificent, a rich, heady Tea scent considered among the finest in the entire class. Devoniensis exists in both bush and climbing forms, the climbing sport discovered in 1858 being particularly valued for covering walls and pergolas in warm gardens. This is a rose of exceptional refinement and historical importance, connecting modern gardeners directly to the early Victorian era of rose breeding.

Family: Rosaceae
Genus: Rosa
Class: Old Garden Rose
Group: Tea
Breeder: Foster
Introduced: 1838

Breeding History

Devoniensis was raised by a nurseryman named Foster in Devonport, Devon, England, and introduced in 1838. It was one of the first Tea roses bred in Britain, at a time when virtually all Tea roses originated from French nurseries or were direct imports from China. The precise parentage is uncertain, but it is believed to involve a cross between 'Smith's Yellow' and 'Park's Yellow Tea-Scented China', both early Tea rose introductions. The variety was an immediate sensation, praised for the beauty and fragrance of its blooms. A climbing sport was discovered in 1858, greatly extending the rose's usefulness in gardens. The name honors its place of origin in Devon. Devoniensis was widely planted throughout the Victorian era and was exported to gardens across the British Empire.

Botanical introduction Vintage botanical illustration introducing Devoniensis Botanical Plate Devoniensis Foster, 1838

Flower Form & Fragrance

The blooms of Devoniensis are large and sumptuous, typically 9-11 cm across, with 40-60 petals arranged in a deeply cupped form that opens to a flat, quartered rosette of great beauty. The color is creamy white with warm buff, apricot, and pale pink shadings at the heart, giving the blooms their distinctive magnolia-like appearance. The petal texture is silky and translucent. The fragrance is outstanding, universally regarded as one of the finest Tea rose scents: rich, sweet, and complex, with notes of fresh tea leaves, honey, and ripe fruit. In warm, still conditions, the scent carries several meters from the plant.

Flower anatomy Cross-section showing petal arrangement and structure of Devoniensis Flower Anatomy Outer petals Inner petals Stamens Pistil Receptacle Scent Profile Top notes Heart notes Base notes

Garden Design & Uses

The bush form of Devoniensis makes an excellent specimen in a warm, sheltered border, ideally underplanted with low-growing herbs or violas. The climbing form is superb on sunny walls, pergolas, and pillars, where the pendulous blooms can be admired from below. The creamy white blooms associate beautifully with soft pastel companions such as pale lavender, old-fashioned pinks, and silver-foliage plants. Plant near windows or doorways to enjoy the extraordinary fragrance. In warm climates, Devoniensis can be used as a boundary or fence rose where the climber will reach 4-5 meters.

Garden design Landscape design layout featuring Devoniensis in a garden setting Garden Design Layout Companion Planting Roses (focal point) Lavender (border) Catmint (edging) Boxwood (structure) Marigolds (pest deterrent)

Growth Habit & Hardiness

As a bush, Devoniensis reaches 90-150 cm in height with a spread of 75-100 cm, forming an upright to slightly spreading shrub with moderately thorny canes. The climbing sport is considerably more vigorous, reaching 4-5 meters in warm climates with strong, flexible canes that are easily trained. Foliage is mid-green, smooth, and semi-glossy with a slightly drooping habit. The plant is moderately vigorous as a bush but very vigorous as a climber. Bloom production is generous, with flowers appearing throughout the growing season, often nodding elegantly on their stems. In frost-free regions, growth can be semi-evergreen.

Climate & Hardiness

Hardy in USDA zones 7b-10. Devoniensis is a warm-climate rose that performs best in mild, frost-free or nearly frost-free conditions. It thrives in Mediterranean climates, the American South, coastal California, and similar warm-temperate regions. Heat tolerance is good but the delicate blooms benefit from light afternoon shade in the hottest areas. Cold tolerance is limited; sustained temperatures below -10C will likely cause significant damage or kill the plant. In marginal zones, the climbing form on a warm south-facing wall offers the best chance of success.

Growth habit Root system and growth form diagram of Devoniensis Growth Habit & Root System Soil line Graft union Size Guide Tall Medium Compact Spread

Seasonal Care Calendar

Monthly Care Intensity Chart WaterFeedSprayJanFebMarAprMayJunJulAugSepOctNovDec12345

🌱 Spring (Mar–May)

Water: Regular
Feeding: Regular feeding
Spray: Regular spray program
Light pruning only. First feeding as growth begins. Train new climbing shoots. Watch for aphids.

☀️ Summer (Jun–Aug)

Water: Very Heavy
Feeding: Regular feeding
Spray: Intensive spray program
Regular deep watering. Deadhead for repeat bloom. Liquid feed fortnightly. Shade blooms in extreme heat.

🍂 Autumn (Sep–Nov)

Water: Regular
Feeding: Light feeding
Spray: Preventive spray
Fine autumn bloom flush. Reduce feeding. Begin winter preparation in marginal zones.

❄️ Winter (Dec–Feb)

Water: Moderate
Feeding: No feeding
Spray: No spraying
Heavy protection in zone 7b. Mulch deeply. In mild zones, minimal care needed. Container plants move indoors.

Planting & Container Growing

Plant in rich, fertile, well-drained soil amended with abundant compost and aged manure. A slightly acidic to neutral pH of 6.0-7.0 is ideal. Choose a warm, sheltered position with at least 6 hours of sun. For the climbing form, plant 30-45 cm from the wall and lean the rootball toward it. Provide sturdy support wires or trellis. Space bush forms 90-100 cm apart. Deep mulching with organic material helps maintain moisture and cool root temperatures.

Container Growing

The bush form of Devoniensis adapts reasonably well to container culture, which is particularly useful in cold climates where the plant can be moved to frost-free protection in winter. Use a pot at least 45 cm in diameter with excellent drainage. Fill with rich, loam-based compost and 20% perlite. Water consistently, maintaining even moisture. Feed fortnightly in the growing season. The climbing form is not practical in containers. Feasibility rating: 6/10 for bush form.

Seasonal Care & Pruning

Spring: Prune lightly after the last frost, removing dead and weak growth only. Apply balanced fertilizer as new growth emerges. Mulch generously. Train new climbing shoots while flexible. Summer: Water deeply in dry weather. Deadhead faded blooms to encourage repeat flowering. Apply liquid feed every two weeks. Provide light shade netting in extreme heat to protect delicate blooms. Autumn: The autumn bloom flush is often exceptionally fine. Reduce feeding gradually. In marginal climates, begin winter preparation. Winter: In zone 7b, provide heavy mulching and wrap canes with insulating material. In zones 9-10, minimal winter care is needed.

Common Mistakes to Avoid

1. Growing in climates too cold for reliable survival, leading to repeated winter dieback. 2. Planting in heavy, waterlogged soil, which Tea roses cannot tolerate. 3. Failing to provide adequate support for the climbing form. 4. Over-pruning, which weakens the plant. 5. Neglecting the significant fragrance potential by planting far from living spaces where it cannot be enjoyed.

Pruning guide Pruning technique diagram for Devoniensis Pruning & Seasonal Care Correct Pruning Cut 45° Bud eye ~6mm When to Prune 🌱 Spring (main) ☀️ Summer (light) 🍂 Autumn (cleanup) ❄️ Winter (dormant)

Propagation

Devoniensis propagates readily from cuttings, a trait common to Tea roses. Semi-ripe cuttings taken in summer root well with rooting hormone, achieving good success rates. Hardwood cuttings in autumn are also effective. Budding onto Rosa fortuniana rootstock is recommended in warm, sandy soils where nematodes are prevalent. Own-root plants perform well in most conditions. The climbing sport must be propagated vegetatively to maintain the climbing character. Difficulty: easy to moderate.

Propagation methods Cutting and budding diagram for propagating Devoniensis Propagation Methods Hardwood Cutting 20–25 cm cutting T-Budding 1. T-cut 2. Insert bud 3. Bind & seal Mid-summer on rootstock

Diseases & Pests

Devoniensis has moderate disease resistance typical of historic Tea roses. Blackspot can be problematic in humid conditions, particularly in summer rainfall areas. Powdery mildew may appear in spring and autumn. Downy mildew is possible in cool, wet conditions. The delicate, pale blooms are susceptible to botrytis in prolonged rain. Aphids and thrips are common pests. Spider mites may appear in hot, dry weather, particularly on the climbing form against warm walls. Good air circulation and preventive fungicide applications help maintain plant health.

Disease identification Common diseases and pests affecting Devoniensis Common Diseases & Pests Black Spot Diplocarpon rosae Powdery Mildew Podosphaera pannosa Aphids Macrosiphum rosae

Cut Flowers & Exhibition

Devoniensis produces magnificent cut flowers. Cut when the bud is loosening and the outer petals are beginning to unfurl. The creamy white blooms are stunning in simple arrangements, either alone or with foliage such as fern fronds. The extraordinary fragrance fills a room. Recut stems under water and use floral preservative. Expected vase life is 4-6 days. Handle gently, as the silky petals bruise more easily than those of modern varieties.

Collector & Exhibition Notes

Devoniensis is an essential variety for any Tea rose collection and a cornerstone of heritage rose gardens. Both bush and climbing forms should be acquired if space permits. The variety is available from specialist heritage rose nurseries, though it is less commonly stocked than some other Tea roses. For exhibition, the large, quartered blooms are impressive when well-grown. Rarity: moderate. Heritage value: very high, as one of the earliest British-bred Tea roses. The 'Magnolia Rose' nickname adds to its appeal.

Comparison with Similar Roses

Compared to 'Sombreuil', another creamy white climbing Tea, Devoniensis has warmer buff-apricot tones at the center and a stronger fragrance, while Sombreuil is somewhat hardier. Against 'Niphetos', Devoniensis is more vigorous and better suited to outdoor culture. Compared to 'Adam', another early Tea, Devoniensis has larger blooms and greater garden impact. The climbing sport rivals 'Lamarque' for covering walls, though Lamarque is more vigorous.

Cut flower care Vase arrangement and cutting technique for Devoniensis Cut Flower Guide Cutting Tips 45° • Cut in early morning • 45° angle cut • Remove lower leaves • Cool water immediately • Floral preservative • Change water every 2 days • Keep away from fruit

Heritage & Conservation

Devoniensis is preserved in heritage rose collections including those of the Heritage Roses Group and various botanical gardens in warm-climate regions. It remains available from specialist nurseries, though it is less widely offered than some other Tea roses. As one of the earliest British-bred Tea roses, its conservation is important for understanding the development of the Tea rose class in European horticulture. Both bush and climbing forms should be maintained.

Cultural Significance

Devoniensis holds a distinguished place in rose history as one of the first Tea roses bred in England, breaking the French monopoly on Tea rose introductions in the 1830s. It was widely grown in Victorian gardens and conservatories, where its extraordinary fragrance made it a favorite for cutting and buttonhole flowers. The 'Magnolia Rose' nickname became universally recognized. In the American South, Devoniensis was found growing in cemeteries and abandoned gardens long after its commercial heyday, evidence of its tenacity and enduring beauty.

Frequently Asked Questions

Why is Devoniensis called the Magnolia Rose?

The nickname derives from the bloom's resemblance to magnolia flowers: large, cupped, creamy white with warm tones at the center, and possessing a similar silky petal texture. The comparison was made by Victorian-era rosarians and has remained the rose's affectionate nickname ever since.

What is the difference between the bush and climbing forms?

The climbing form is a sport (natural mutation) discovered in 1858 that produces much longer canes, reaching 4-5 meters. The flowers are identical in both forms. The bush reaches only 90-150 cm. Choose based on your garden situation: the climber for walls and pergolas, the bush for borders and beds.

Can Devoniensis survive in zone 6?

Survival in zone 6 is unlikely in the open garden. However, it can be grown in a large container and overwintered in a frost-free greenhouse, conservatory, or cool room. This was common Victorian practice, when Tea roses were considered conservatory subjects in northern climates.

How does the fragrance of Devoniensis compare to other Tea roses?

The fragrance is considered among the finest of all Tea roses, rivaling 'Adam' and 'Général Schablikine' for intensity and complexity. It is a rich, sweet, true Tea scent with honey and fruit notes. Many rosarians rank it in the top five most fragrant Tea roses.

Is Devoniensis suitable for a small garden?

The bush form is well-suited to small gardens, reaching only 90-150 cm. It can also be grown in a large pot. The climbing form requires significant wall space, reaching 4-5 meters, so it is more appropriate for medium to large gardens or where vertical space is available.

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Devoniensis, the beloved 'Magnolia Rose' of 1838, is one of the most beautiful and historically important Tea roses, prized for its large, creamy white blooms with buff-apricot centers and an extraordinarily rich Tea fragrance. Available in both bush and climbing forms, it thrives in warm climates and rewards gardeners with refined, silky blooms of timeless Victorian elegance.

Quick Reference: Devoniensis

Class: Old Garden Rose
Group: Tea
Color: Creamy White
Fragrance: Strong
Breeder: Foster
Introduced: 1838

Key Principles: Full sun (6+ hours), good air circulation, deep watering at the base, and regular feeding during the growing season.

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