'Parfum d'Ethiopia' artemisia is an intriguing option for back-of-border plantings. Lacy silvery-blue foliage forms evergreen mounds up to two feet tall and almost three feet across, providing a dramatic backdrop for seasonal flowers or other richly colored evergreens such as heucheras or mondo grass. Its fragrance, purportedly somewhat herbal, may make 'Parfum d'Ethiopia' less appealing to deer. Though hardy down to -10 degrees, wormwood may suffer from prolonged cold, so don't hesitate to give it a light pruning in late winter to keep the shrub compact and tidy.