Rosa 'KORvodacom'

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.

Plum Perfect is a shrub rose on the small side that performed far from perfectly in our trial. The moderately acceptable foliage appearance and pretty floral display in spring had disappeared by June with sunburn significant by July. Foliage on all treatments was pale, prone to pests, and began to decline into fall dormancy in September. The first flush of blooms in May showed the lovely flower color for which the plant is named, but the small, non-uniformly shaped shrubs never achieved full floral coverage, as shown in the ratings (Table 12a). Subsequent flowering was very light and could not make up for the poor foliage quality the rest of the summer. The only significant growth difference was in the month of August, but subsequent plant decline in the moderate treatment (the largest plants) saw that difference disappear by September. Since this rose never achieved acceptable appearance after May, we do not recommend this plant on any irrigation treatment in this growing region. 

Plum Perfect started the season with marginally acceptable scores in the May Open House ratings, but by the summer ratings, this cultivar didn’t “look happy at all.” Scores remained low in September as Plum Perfect “didn’t fare well over the summer.” Participants’ scores in the Open House echo those of project staff (Table 12b).

Growth and Quality Data

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