Dusty Miller (Jacobaea maritima) is a unique plant with silvery and lacy leaves which varies with variety. which made it useful in creating contrast and accent against the predominantly green or red foliage in the garden. It's neutral color makes it a great choice for as a filler plant in any border.
When the plant gets to a mature stage, the shape becomes irregular and the stems get woody. The plant seem to undergo bolting at flowering. However, this can be solved by pruning the plant to shape. As for the ones I have in my containers (as seen in the picture below) they will soon be transferred to the ground before I plant new annuals into the containers again.