BREEDING OF WOODY ORNAMENTALS IN SWEDEN
During the last 10 years, attempts have been made to improve the genetic quality of ornamental trees and shrubs cultivated in Swedish nurseries. Selections have been made in cultivated and wild-collected plant material as well as hybridization work. The work has been concentrated on finding hardy and healthy narrow-crowned trees, small ornamental trees for the modern Swedish garden and low-growing shrubs as ground-covers for parks and gardens. Until now about 25 clones and 5 seed provenances have been introduced on the Swedish market and given a special quality symbol - E - which is printed on the plantlabels.
Bengtsson, R. and Jansson, E. (1992). BREEDING OF WOODY ORNAMENTALS IN SWEDEN. Acta Hortic. 320, 199-202