When pruning your Artemisia plants, make angle cuts at about 45 degrees. Make your angled cuts away from the direction of the buds and branch growth. For older and more mature artemisia plants, make cuts of about 6 inches. For younger artemisia plants, cut only about three or 4 inches off the end of the branches.

Do you cut back Artemisia in winter?

Pruning Silver Mound (Wormwood) Silver mound plants benefit from regular, annual pruning. Because the flowers are insignificant, you should snip off flower stems as soon as they appear. It’s also necessary to cut back the plant to the ground before winter.

When should I prune Artemisia Powis Castle?

The best time to prune is in early spring as the buds begin to push out, but before new foliage appears. You can cut back ‘almost’ to the ground.