Brief summary
Modern Rose, polyantha "Orange Morsdag", Netherlands, introduced by F.J. Grootendorst in 1956, Usually is orange, red in color, semi double bloom shape, single count petal count, blooms 4 - 5 cm in size, has 5-10 buds per stem, repeat rebloom, has light fragrance, the bush shape can be bushy, 40 - 200 cm in height, 75 cm in width, suitable for USDA zone 6 from -23°C and above, low resistance to rain, moderate resistance to black spot, moderate resistance to mildew.
More information
There once existed a repeat-flowering polyantha rose named Echo. It was one of the few repeat-flowering sports arising from a single variety. The sequence of sporting did not end with Echo; additional sports originated from this cultivar, including Anneke Koster, and from Anneke Koster came Dick Koster. Dick Koster itself produced numerous sports—its progeny include Margo Koster and Morsdag, and from Morsdag came Orange Morsdag and Vattertag. All of these roses differ only in flower colour: Dick Koster is dark pink, Margo Koster is bright orange with a silvery pink reverse to the petals, Morsdag is dark red, Orange Morsdag is bright orange, and Vattertag is also orange. The petals curl inward to such a degree that the globular blooms remain closed until they fade. In wet weather conditions, the blooms can rot and the petals show moisture staining. All varieties are widely grown in many regions, bloom abundantly, and are easy to cut.