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Family: Rosaceae (ro-ZAY-see-ee) (Info) Genus: Rosa (RO-zuh) (Info) Cultivar: Golden Unicorn Hybridized by Buck; Year of Registration or Introduction: 1985
Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) 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) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F) USDA Zone 11: above 4.5 °C (40 °F)
Bloom Color: Yellow blend (yb)
Bloom Shape: Double Cupped
Flower Fragrance: Very Fragrant
Bloom Time: Late Spring/Early Summer Blooms repeatedly
Habit: Shrub
Patent Information: Non-patented
Other Details: Resistant to black spot Resistant to mildew Resistant to rust Stems are moderately thorny
Pruning Instructions: Blooms on new wood; prune early to promote new growth
Propagation Methods: From herbaceous stem cuttings From woody stem cuttings From softwood cuttings From semi-hardwood cuttings From hardwood cuttings By grafting By budding By simple layering By air layering By tip layering
On Feb 3, 2013, GingerGaia from West Monroe, LA (Zone 8a) wrote:
I planted this 4 yrs ago in a pot that was placed in a bed. Then I was bed bound 4 yrs. So no feeding, pruning or weeding and had a shrub that grew out over part of it. I was plrased to find it leafing out with lots of green stems today, as I am finally well enough to garden again. What a tough rose !
I bought a Golden Unicorn because it was advertised as "hardy" in a seed catalog. It is not as hardy as adverised -- I get it through the winter in my location (NE Wisconsin, zone 5) by boxing it up and burying it in ground, just as I get hybrid teas through the winter. It is more hardy than any hybrid tea I have found, though, and a lot more of the plant survives the winter if boxed and buried.
The bloom itself is glorious. The first flush of blooms in June is very heavy, and the rebloom is good. The flowers are fragrant and you can get a good whiff of the plant just walking by it. The color is richer in cooler weather, and lasts longer, so any blooms that come in the fall tend to be prettier than the summer blooms.
The flower fades and the petals drop very quickly. I think that when it is warm a flower probably lasts only about two days, and the heavy bloom leaves the ground under the plant littered with petals. Because it is a shrub rose, the flower stems are too short to use this one as a cut flower, and in any case, the blooms do not last long enough. I wish they did, because this is a beautiful, fragrant, reasonably hard rose. Thumbs up!
2 members have or want this plant for trade.
