Rose Corvedale

English shrub rose ‘Corvedale’ is treasured for its clear rose-pink, open-cupped flowers with prominent golden stamens and a strong, myrrh-like fragrance. It forms a medium to large shrub which combines ornamental grace with notable hardiness. It produces an abundance of softly scented blooms on arching stems, making it excellent for both mixed borders and cutting gardens. Its foliage is typically healthy and semi-glossy green, and the plant is very disease-resistant - traits that together with its repeated flowering flushes give it enduring appeal to gardeners and collectors alike.

DESCRIPTION OF THE VARIETY

Like many Austin cultivars, it was developed to marry old-rose charm with modern shrub-rose vigor and repeat blooming. It stands out among Austin’s pink roses for the clarity of its color and its aromatic intensity. Its clear rose-pink blooms are remarkably saturated and unblemished, giving a youthful glow even in full sun. The deeply cupped flower form reveals a cluster of bright yellow stamens at its center, a pleasing contrast that adds to its visual interest. The overall plant habit is a bushy, rounded shrub: canes grow upright from the base then arch gracefully under the weight of blooms. Overhead trellis support is generally unnecessary, though the slender canes can lean if heavily loaded. ‘Corvedale’ maintains fresh foliage during the growing season, with new leaves emerging a vibrant medium-green. In the autumn it typically drops its leaves in cool climates. Unlike some more delicate roses, it is known to withstand typical summer heat and rain with minimal leaf spot or mildew, reflecting the robust health of many modern English shrubs.

FLOWERING

The repeat flowering of this rose is very good: ‘Corvedale’ flowers in abundant flushes from late spring into fall, with a few scattered blooms even in mild winters. The first flush in late spring is usually heaviest, followed by several lighter flushes through summer and early autumn.

Flower bud:

The flower buds are slim and conical with greenish sepals that often show a faint apricot or copper blush on the outside as they elongate. The sepals remain tightly closed until the flower is nearly ready to open. As the bud swells, one can see the inner petals tinted pink. When opening begins, the bud gradually unfurls into the wide cup shape, the petals separating from the sepals one by one. The peduncles (flower stalks) tend to be long and firm, holding the buds well above the foliage.

Bloom:

The blooms of ‘Corvedale’ are large for a shrub rose, typically reaching of about 9 - 12 cm (3.5 - 5″) in diameter when fully open, and borne primarily in small clusters on a new wood. A mature plant often carries a profusion of 4 - 6 flowers per stem during a flush. The flowers are double, with about 30 - 40 petals each. In the bud stage and in the early open stage the blossoms show a tightly arranged cushion of petals, but as the bloom fully opens it becomes a flat topped, open cup. This cup shape displays the mass of petals and exposes the golden stamens at the center. The petals are broad with slightly scalloped edges; when first open they form a neat, symmetrical rosette before relaxing into a looser cup form. The overall effect in the garden is one of softly cupped pink flowers clustered along the arching canes.

The color of ‘Corvedale’s blooms is a pure, true rose pink, also described as clear rose pink – a midtone rose shade without too much coral or lavender undertone. In cooler weather the color can deepen slightly; in hot sun some fading toward pale pink at the petal edges may occur, but overall the flowers retain their distinct pink tone well. On sunny days the petals often have a delicate inner glow. As the flowers age or are exposed to heat, they may develop a paler margin, giving older blooms a two-tone effect with a lighter rim. However, unlike some pink roses that shift toward cream, ‘Corvedale’ generally stays within the pink range throughout the life of the bloom. The transition of color and petal texture is gradual: fully open flowers show slightly looser, thinner petals at the edges while the inner petals remain more tightly cupped. During an extended bloom flush, the mix of bud, open cup, and half-blown form creates a continuously charming effect.

Petals:

The petals of this rose are of medium thickness with a smooth, satiny texture. The outer petals overlap neatly at first, but they curve back as the bloom opens, giving a gently ruffled outline to the cup. Margins are softly rounded and only very gently serrated or scalloped – there are no flamboyant fringes or pointed tips. The petal color is most intense near the center, often fading to a slightly lighter pink toward the edges as the bloom matures. In bright sun the color may bleach a little on the petal faces, but in cool or overcast conditions the color is richer. Petals are fairly weather-resistant; strong rain may cause minor petal drop if entire clusters are drenched, but individual blooms hold up well if proper air circulation is maintained. In a long vase life test, ‘Corvedale’s blooms keep their shape and color reasonably well, often lasting several days, reflecting their moderate petal thickness and form.

Fragrance:

A signature trait of ‘Corvedale’ is its distinctive myrrh scent. The fragrance is strongest on warm or still days: a warm, sweet-spicy aroma emanates from each cluster of flowers. David Austin describes it as a “strong, pleasant myrrh fragrance”, the kind of herbal-minty note often found in English roses. Unlike many pink roses that might have only a light or faint aroma, ‘Corvedale’s myrrh note persists throughout the day and into evening in ideal conditions. The fragrance is especially pronounced at first light and as evening cools; a bed of ‘Corvedale’ in bloom can fill a border with its spicy-sweet scent. As blooms age, the perfume may diminish somewhat, but new flushes maintain the strong character.

Reproductive parts:

The central stamens of ‘Corvedale’ are bright yellow to pale gold, long and slender, and usually remain exposed within the open cup of petals. The contrast of stamens against the pink petals is visually appealing. The pistils (styles and stigma) are light-colored but less conspicuous.

PLANT

‘Corvedale’ is classified as Shrub rose, and is part of an English Shrub Rose collection within David Austin’s broad “English Rose” collection. The growth habit of ‘Corvedale’ is moderately vigorous and bushy. It grows as a somewhat loose, rounded shrub, developing multiple canes from a central base, gradually forming a mound. The mature and well established plants reach about 140 - 150 cm (4.8 - 5 ft) and of about 140 - 150 cm (4.8 - 5 ft) in width; the plants typically reach maturity when a 3-year-old or older. The cane architecture is upright to gently arching - new shoots reach upward but tend to bend a little under heavy flower weight. As the season progresses, the plant maintains its shape without becoming lax or spindly, producing successive flushes of new growth and blooms.

This rose is generally easy to grow in typical garden conditions. It thrives in full sun to light afternoon shade; in too much shade the plant will grow leggy and bloom less. It prefers fertile, well-drained soil of moderate moisture. In cold climates, a winter mulch is advisable to protect the crown. As with most hardy roses, it benefits from spring pruning: cutting back old or weak wood, thinning crossing canes, and shaping the remaining framework. Austin recommends a medium cutback after frost risk has passed, on the order of one-third for warm climates or a bit harder in colder areas. After the first heavy bloom flush in early summer, spent blossoms should be removed promptly to encourage rebloom. Gardeners find that light maintenance pruning each year (removing winter dieback and any crossing shoots) keeps ‘Corvedale’ healthy and at a manageable size. Because of its moderate height, it does not require the heavy caning or support that some tall climbers need; it fits well into a mixed shrub border or hedge where a 150 cm tall rose is desired. It can also be grown well as an informal specimen in a lawn or a cottage garden setting, where its repeated flushes and fragrance add seasonal interest.

Foliage:

There is a normal quality of the deciduous compound leaves on the plants of ‘Corvedale’. The leaf color is a pleasing medium green, the foliage is large and semi-glossy, has a slight sheen when new, turning more matte later in the season. Typical mature leaf size (entire compound leaf) is around 10 - 15 cm (4 - 5 inches) in length, with each leaflet several centimeters long. Autumn foliage color is usually a basic yellow-green before leaf drop; it does not exhibit dramatic fall color. The leaves emerge clean and healthy in spring and remain largely unblemished except in extremely humid conditions. New growth often has a reddish tint initially, which turns to green quickly. The overall effect is neat, robust foliage that forms a nice backdrop to the flowers without excessive glossiness or fragility.

Leaflets:

The number of the leaflets typically varies from 5 to 7 leaflets, including the terminal leaflet; 5 is most common on mature growth, with occasional 7-leaflet leaves on vigorous stems. The leaflets themselves are elliptic to ovate with a pointed tip and a rounded base. Margins are serrated, the type of serration is small and single. The upper surface of a leaflet is smooth-textured, and the undersides are a lighter green.

The leaflet rachis (central leaf stalk) and petiolules are relatively slender but sturdy. The venation is pinnate (one main midrib with smaller side veins), visible on the surface. These leaflet features are standard for modern shrub roses. In the spring flush, the leaflets unfurl quickly and tend to orient upward, giving the plant a tidy look.

Wood:

The canes of ‘Corvedale’ are of moderate thickness, they grow upright on young shoots, then arch gradually as they elongate and bear blooms. Individual canes can reach well over 100 cm (3.3.ft) before bending. The bark is initially green or olive, often shading to reddish-brown with age. Branching begins close to the base, so the shrub has a full bottom and few bare stems. Growth rate is moderate to vigorous: in a good season a well-established plant can put on 50 - 70 cm (1.9 - 2.3 ft) of new cane length in a flush. The overall structure is loose, this rose tends to form a somewhat rounded dome. Deadwood should be removed yearly to maintain this shape. Otherwise, the wood is quite sturdy: even in full bloom the stems support the flowers without easily breaking. This makes pruning and cutting blooms relatively straightforward, as one need not handle overly fragile stems.

Prickles:

On the main canes from the base and on the laterals from the main canes of the rose variety ‘Corvedale’ there is a normal quantity of prickles. They are medium in size, scattered along the canes, and somewhat curved and inclined, with a dark brown to reddish coloration on the mature stems.New canes may have fewer, softer prickles which harden with age.

Small prickles:

Under normal growing conditions there are no small prickles on the main canes from the base and on the laterals from the main canes of the rose variety ‘Corvedale’.

Disease resistance and stress tolerance:

Rose ‘Corvedale’ is noted for its outstanding health. Trial and garden reports consistently rate it as very disease-resistant, it shows excellent tolerance to black spot (Diplocarpon rosae) and powdery mildew compared to many hybrid teas and older shrub roses. Leaf drop due to black spot is minimal in a normal season. Likewise, rust is rarely a problem. Its robust constitution means that even under wet, humid conditions the foliage stays clean through the bloom periods. Of course, no rose is invulnerable: under extreme or neglected conditions one could still see some spotting or mildew, but such issues are minor and infrequent.

In regards to environmental stresses, ‘Corvedale’ is moderately tolerant of summer heat. It does not like to sit in waterlogged soil, so good drainage is recommended to avoid root problems. The plant is reasonably drought-tolerant once established, though flowering improves with consistent moisture. Wind tolerance is good: the somewhat flexible canes bend rather than snap in storms. Salt spray (as near seaside gardens) may be more than it prefers; some leaf scorch has been noted in highly saline conditions (a common limitation for many roses).

Winter hardiness is good: this rose is hardy to about USDA zone 6b (around −18 °C) without protection. The introduction data suggests it can survive zone 5 in mild winters (with mulch), though in the coldest part of that range it may suffer dieback to the ground if unprotected. Though RHS class was not published, it is likely equivalent to an RHS H6 (hardy –20°C to –15°C).

The name ‘Corvedale’ refers to the Corve Valley of the River Corve in Shropshire, England - the scenic countryside area near the Austin nursery. According to Austin’s own notes, “Corvedale is a beautiful valley in the Shropshire countryside, not far from our nursery”. This naming continues the breeder’s tradition of using English place names for many cultivars. Beyond regional tribute, ‘Corvedale’ was chosen to evoke the gentle charm of the English landscape, fitting the rose’s soft appearance and heritage.

This rose has not been recorded as winning any major rose awards or medals.

ORIGIN OF THE VARIETY

Rose variety ‘Ausnetting’ / 'Corvedale' originated by David Austin by crossing a seed parent English shrub rose ‘Charles Rennie Mackintosh’ with the pollen parent - unnamed rose seedling.

BACKGROUND OF THE VARIETY

Rose ‘Ausnetting’ / 'Corvedale' fits into the broader class of English Shrub roses that David Austin developed starting in the 1960s. By 2001, Austin had created dozens of such cultivars with varied colors and fragrances. It stands among several mid-pink English roses but is distinctive for the purity of its color and its myrrh scent. It exemplifies the later-wave English roses of the turn of the century: breeding effort focused on health and garden performance as much as flower form. It is especially recommended for settings where repeated flushes of softly scented pink flowers are desired without heavy spray programs.

SUMMARY OF THE VARIETY

‘Ausnetting’ / 'Corvedale' is a large-flowered, repeat-blooming English shrub rose with a classic cup-shaped blossom and strong fragrance. The plant forms a robust, bushy shrub with healthy foliage and excellent garden vigor. It is distinguished by its unusual combination of crisp clear pink bloom color and potent myrrh scent – a pairing that is uncommon among modern roses and this rose variety incorporated the following unique combination of characteristics:

  large, open-cup flowers of pure clear rose-pink displaying prominent golden stamens;

  strong, pleasantly sweet myrrh fragrance;

  free-flowering habit with plentiful repeat flushes from late spring through autumn;

  vigorous, medium-height shrub with lush semi-glossy foliage;

  very high resistance to black spot and mildew, making it low-maintenance.

Suitable propagation methods for ‘Ausnetting’ / 'Corvedale' follow standard rose procedures: it is commonly grafted or budded onto hardy rootstock (e.g. Rosa multiflora or Dr. Huey) for garden trade, or propagated by hardwood cuttings under mist in professional settings.

COMPARISON WITH PARENTS

The known seed parent, ‘Charles Rennie Mackintosh’ (Ausren, 1988), bears large, very full blossoms of soft lilac-pink with an Old Rose fragrance with notes of lilac and almond. In contrast, the blooms of ‘Ausnetting’ / 'Corvedale' are smaller and less densely petaled, has approximately 40 petals vs. about 160 petals in ‘Charles Rennie Mackintosh’, and its color is clearer pink rather than lilac. ‘Ausnetting’ / 'Corvedale' often grows larger, of about 140 - 150 cm tall, than ‘Charles Rennie Mackintosh’ which grows about 120 cm tall. Importantly, their scents differ: ‘Ausnetting’ / 'Corvedale' has the characteristic English-rose myrrh scent, whereas ‘Charles Rennie Mackintosh’ has an old-rose fragrance blended with lilac and almond aspects. In foliage and vigour, both are vigorous and bushy, though the foliage of ‘Ausnetting’ / 'Corvedale' is slightly larger and glossier. Since the pollen parent of ‘Ausnetting’ / 'Corvedale' is undocumented, a full genetic comparison cannot be made.

USDA 6