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Hardiness: USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color: Yellow blend (yb) Orange and orange blend (ob)
Bloom Shape: Double
Flower Fragrance: Slightly Fragrant
Bloom Time: Mid Summer Late Summer/Early Fall Blooms repeatedly
This rose has not done well in my garden. It bloomed mostly during the spring and the few blooms it had - all of them had brown around the edges. It had one bloom during the summer which also had brown around the edges and was ugly. All my other roses are doing well. I don't think this rose likes high heat and humidity. I did plant it with good soil for roses and water regularly. Perhaps the problem is that this rose was bred for cold tolerance and can't take the extreme heat and humidity of the Gulf Coast (I live in the Houston area).
On Feb 21, 2007, soulgardenlove from Marietta, GA (Zone 7b) wrote:
From Iowa State University Extension:
Winter Sunset (1997) Yellow blend shrub. The deep saffron yellow buds open to large, full, double amber yellow blooms with nasturtium orange on the petal bases. The blooms age slightly lighter and are borne in small clusters of 3-7. The foliage is large, dark green and glossy. The bushy, upright is 3 feet tall and blooms abundantly from June until frost. The plants have good resistance to Blackspot and mildew. The plants are winter-hardy in Iowa without protection.
Rated by the American Rose Society as the "top new shrub rose". Fully double blooms of amber-orange, a unique and delightful color with a strong fruity fragrance. An upright compact bush with rich green shiny foliage. The plants are winter hardy in Iowa without protection. Continual bloomer, z 4/5 - 10, petals 30 -35.
Height: 4' x 3'
Fragrance: Exceptionally Fragrant
Dr. Griffith Buck was a plant breeder at Iowa State University breeding new varieties of soybeans and corn but roses were his true love and passion. He started breeding roses around 1950 using strains of very cold hardy roses combined with modern hybrid teas and others. He would plant them outside in the field and those that survived harsh Iowa winters of 20-30 degrees below zero with absolutely no protection would be the seedlings he chose to introduce. These are very disease resistant roses and have been tested in Iowa's hot humid summers. Most other roses bred in America are bred in southern California where blackspot is not a problem so evalutations cannot be carried out. I have admired Dr. Buck's rose breeding for many years. We visited the garden at Iowa State University, which features his roses, more than fifteen years ago. I liken Dr. Buck to the artist van Gogh whose paintings were never appreciated in his lifetime. Dr. Buck was also an artist of rose breeding. His creations are just now gaining the acceptance and popularity they have long deserved. His goal was to produce roses that were disease-resistant and very hardy. His efforts are highly regarded and have been preserved at the University of Minnesota under the supervision of Kathy Zuzek. While other roses need protection in zone 5, the Buck roses do not. Some protection in Zone 4 is advisable. In order for these roses to be ready to overwinter in zones 4 and 5 they should be planted by June 15th. We planted an entire section with sixty varieties of these roses and the response to them would have been so gratifying to Griffith Buck. His widow Ruby and daughter Mary are still here to bask in the praise that husband and father is finally receiving. His vision and dedication in spite of not being recognized in his time are to be admired.
Bloom: Orange Blend
Size: 4 - 5 ft. tall
Introduced: Buck, 1997
Soft orange buds open to double roses of orange and saffron yellow. Blooming in clusters of 3-7 roses per stem, this disease-resistant rose makes a 4-5 ft. hardy shrub. Good cut flowers. Zones 5-10.
This plant has been said to grow in the following regions:
South Amana, Iowa Camden, Maine Brick Township, New Jersey Jackson, Tennessee Locust Dale, Virginia Mount Horeb, Wisconsin