The susceptibility of Euonymus species and cultivars to infestation by euonymus scale was studied in both field-grown and container plants. Significantly lower levels of euonymus scale were observed on Euonymus kiautschovicus ‘Manhattan’, E. japonicus, and E. fortunei in the field studies. In contrast, E. japonicus ‘Albo-marginatus’ and E. japonicus ‘Microphyllus’ had the highest infestation levels, indicating greatersusceptibility to euonymus scale. In container studies, E. japonicus ‘Albo-marginatus’ was the most susceptible of the species and cultivars; however, none of the remaining 5 differed significantly from one another

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Author notes

This project was supported in part by the Horticultural Research Institute, Inc. 1250 I Street, N.W., Suite 500, Washington, DC 20005, by the Virginia Nurserymen's Association, and by the Virginia Agricultural Experiment Station.

2Graduate Student and Associate Professor, respeclively.