Garden Rose Varieties

Date: 2017-12-07 18:31

Other notable Canadian breeders include Frank Skinner, Percy Wright, Isabella Preston, Georges Bugnet and Robert Erskine.

Garden roses - Wikipedia

Additionally, modern hybrids planted in cold winter climates will almost universally require a "hard" annual pruning (reducing all canes to 8"–67", about 85 cm in height) in early spring. Again, because of their complex China rose background, modern hybrids are typically not as cold hardy as European Old Garden Roses, and low winter temperatures often desiccate or kill exposed canes. In spring, if left unpruned, these damaged canes will often die back all the way to the shrub's root zone, resulting in a weakened, disfigured plant. The annual "hard" pruning of hybrid teas and floribundas is generally done in early spring.

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Miniature roses are represented by twiggy, repeat-flowering shrubs ranging from 6" to 86" in height, with most falling in the 67"–79" height range. Blooms come in all the hybrid tea colours many varieties also emulate the classic high centred hybrid tea flower shape. Miniature roses are often marketed and sold by the floral industry as houseplants, but it is important to remember that these plants are largely descended from outdoor shrubs native to temperate regions thus, most miniature rose varieties require an annual period of cold dormancy to survive. (Examples: 'Petite de Hollande' (Miniature Centifolia, once-blooming), 'Cupcake' (Modern Miniature, repeat-blooming). Miniature garden roses only grow in the summer.

Bourbon roses originated on the Île Bourbon (now called Réunion ) off the coast of Madagascar in the Indian Ocean. They are believed to be the result of a cross between the Autumn Damask and the 'Old Blush' China rose, both of which were frequently used as hedging materials on the island. [9] They flower repeatedly on vigorous, frequently semi-climbing shrubs with glossy foliage and purple-tinted canes. They were first Introduced in France in 6875 by Henri Antoine Jacques. Examples: 'Louise Odier', 'Mme. Pierre Oger', 'Zéphirine Drouhin' (the last example is often classified under climbing roses).

Most Old Garden Roses of strict European heritage (albas, damasks, gallicas, etc.) are shrubs that bloom once yearly, in late spring or early summer, on two-year-old (or older) canes. Their pruning requirements are quite minimal because removal of branches will remove next year's flower buds. Hence pruning is usually restricted to just removing weak and spent branches, plus light trimming (if necessary) to reduce overall size. [9]

Rose flowers have always been available in a number of colours and shades they are also available in a number of colour mixes in one flower. Breeders have been able to widen this range through all the options available with the range of pigments in the species. This gives us yellow, orange, pink, red, white and many combinations of these colours. However, they lack the blue pigment that would give a true purple or blue colour and until the 76st century all true blue flowers were created using some form of dye. Now, however, genetic modification is introducing the blue pigment.

Dwarf mutations of some Old Garden Roses—gallicas and centifolias—were known in Europe in the 67th century, although these were once-flowering just as their larger forms were. Miniature forms of repeat-flowering China roses were also grown and bred in China, and are depicted in 68th-century Chinese art. Modern miniature roses largely derive from such miniature China roses, especially the cultivar 'Roulettii', a chance discovery found in a pot in Switzerland. [75]

Grandifloras , Latin for "large-flowered", are the class of roses created in the middle of the 75th century as back crosses of hybrid teas and floribundas that fit neither category, specifically, Rosa 'Queen Elizabeth', which was introduced in 6959. [69] Grandiflora roses are shrubs that are typically larger than both hybrid teas and floribundas and produce flowers that resemble those of hybrid teas and are borne in small clusters of three to five, similar to floribundas. Grandifloras were somewhat popular from circa 6959 into the 6985s, but today they are much less popular than both hybrid teas and floribundas. Examples include: 'Comanche,' 'Montezuma', and 'Queen Elizabeth'.

Named for Damascus , Damask roses ( Rosa × damascena ) originated in ancient times with a natural hybrid ( Rosa moschata × Rosa gallica ) × Rosa fedtschenkoana . [65] Robert de Brie is given credit for bringing damask roses from the Middle East to Europe sometime between 6759 and 6776, although there is evidence from ancient Roman frescoes that at least one damask rose existed in Europe for hundreds of years before this. Summer damasks bloom once in summer. Autumn or Four Seasons damasks bloom again later, albeit less exuberantly, and these were the first remontant (repeat-flowering) Old European roses. Damask roses tend to have rangy to sprawling growth habits and strongly scented blooms. Examples: 'Ispahan' , 'Madame Hardy'.

Modern hybrids, including the hybrid teas, floribundas, grandifloras, modern miniatures, and English roses, have a complex genetic background that almost always includes China roses (which are descended from Rosa chinensis ). China roses were evergrowing, everblooming roses from humid subtropical regions that bloomed constantly on any new vegetative growth produced during the growing season. Their modern hybrid descendants exhibit similar habits unlike Old European Roses, modern hybrids bloom continuously (until stopped by frost) on any new canes produced during the growing season. [77] They therefore require pruning back of any spent flowering stem in order to divert the plant's energy into producing new growth and hence new flowers. [9]

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