这是其中一种 Morden Blush, introduced in 1988, is a hardy, low-growing, everblooming, shrub. It has moderate to good field resistance to powdery mildew and blackspot. Plants tolerate the high summer temperatures exceedingly well.
Plants grow 0.5 to 1.0 m high and flower continuously from June to freeze-up, the longest for any prairie-developed shrub rose. The flowers are of variable colour depending on temperature. Flowers are light pink in cool temperatures and ivory to white in hot temperatures. The flower bud is very attractive and can be used in corsages or wedding bouquets. When open, the flowers are flat, with the inner petals infolded to form a button-type centre, similar to the old-fashioned types of roses.
Morden Blush survives in zone 2b. It propagates very easily from softwood stem cuttings.
This rose is a complex hybrid. The seed parent was a hybrid of Prairie Princess and Morden Amorette. The pollen parent was a complex hybrid involving Prairie Princess, White Bouquet, Assiniboine and R. arkansana
这个不用winter protection

Morden Fireglow, introduced in 1989, is unique among shrub roses as it combines both hardiness and scarlet-red flowers, a color rarely seen in hardy roses. Plants flower recurrently throughout the growing season.
Morden Fireglow has an upright plant habit, grows from 0.5 to 0.7 m in height, and bears flowers in clusters of 1 - 5. The flowers are 6 - 8 cm across with about 28 petals. Field resistance to powdery mildew and blackspot is moderate.
Plants have consistently survived winters in zone 2b. They propagate easily from softwood stem cuttings.
Morden Fireglow was developed through the selection of its parents on the basis of chemical analysis of the flower pigments. This cultivar was developed using a seed parent derived from Prairie Princess, Morden Amorette, White Bouquet, Assiniboine and R. arkansana. The pollen parent was Morden Cardinette

Morden Centennial was introduced in 1980. It is a hardy, floriferous shrub rose flowering repeatedly throughout the season with the main flushes in June and August-September. The name commemorates the centennial of the Town of Morden, which occurred the year of introduction.
Plants reach a height of 0.7 - 1.0 m and bear lightly scented, medium pink blooms in clusters of 1 - 4. Flowers are 7 - 8 cm across with about 40 petals. Removal of dead flowers promotes reblooming.
Morden Centennial has good resistance to powdery mildew and moderate resistance to blackspot. Plants survive winters in zone 2 and propagate easily from stem cuttings.
In 1996, Morden Centennial was honoured with "The Outstanding Cultivar Award", presented by the Canadian Society for Horticulture Science. This award is presented to a plant that has made a significant contribution to industry and has been widely accepted as a standard in many parts of the country.
This cultivar originated from a cross between Prairie Princess and a hardy seedling developed from White Bouquet, Assiniboine and R. arkansana