Rosa 'Pink Grüss an Aachen'

Summary

UC Davis is located in Davis, California, this site has a silty clay loam soil and plants are irrigated with potable water. More information about the field sites is located in the Nuts & Bolts section.

The first thing to note is that these plants, which are not commercially available, were sourced from the UC Davis Arboretum nursery in the spring of 2012, and much of the material was in poor condition. Some disease symptoms were apparent immediately, so rather than treat, we did our best to clean up the infected foliage and allow the plants to put on newer healthier growth. Throughout the irrigated growing season of 2013, there were no significant differences between irrigation treatments in relative growth. Only flowering was somewhat compromised on the lowest level of irrigation.

Overall these old-fashioned landscape roses are somewhat attractive when at their height of bloom, but their overall appearance only occasionally and sporadically rose to the “very good” level. The shrubs were never completely disease-free except for a brief period when the spring growth first appeared. It is unclear whether this was an artifact of poor propagation methods, or whether this rose is just prone to some level of fungal disease. It is our opinion that this species does not rise to the level of an All-Star, and that there are landscape roses available that are hardier and as attractive in bloom. The master gardeners did not evaluate this species.

Growth and Quality Data

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