Artemisia shrubs should be divided in early spring after they have been pruned, cut back or thinned out. Also it is best to dig out your srubs in the morning or late afternoon, when the temperature is not as hot. This is typically true when dividing almost any type of garden flower, plant, or shrub.

How do you divide Artemisia plants?

It is important to divide many perennials every 3-4 years so they keep producing vigorous new shoots. With Artemisia, take a sharp spade and slice through the clump removing the older center portions. Keep the younger, more vigorous parts of the plant from the outer perimeter of the clump.

Can you split silver mound Artemisia?

Regular division of the silver mound Artemisia is a part of caring for silver mound, but is required less often if planted in the proper soil. ... Trimming keeps the plant tidy and helps it maintain its mounding shape and avoid splitting.