These need cutting back before new growth in the spring, but not too severely. They transplant well and will reach a spread of 4-6'.
Common name: artemisia 'Powis Castle'
Family: asteraceae
Genus: artemisis
Species ludoviciana
What zone are you in? I understood that it doesn't survive any colder than zone 6.
Fran... I am in zone 6b... (my zone is noted just under my city, which is just below my name in the box next to my post above.)