This is my earliest blooming rose in Zone 6b in the Eden Hills of Kentucky. The plant is 5 years old and extends above the top of an 8-foot trellis and has a spread of about 20 feet. It is extremely floriferous, fragrant (esp. briefly in the morning), thorny and vigorous. The bees love the flowers.
I've always been interested in this rose since Jackson T. Dawson was the first superintendent of the Arnold Arboretum. Please post a photo under 'Dawson' that shows the rose without the bee and let us know where you purchased the rose and the date it flowers in your zone..