Several years ago I added this perennial variety to my rock garden. It has a silver leaf with fine coating of hairs. The flowers are yellow and although no blooms appear during the winter the foliage adds a bight spot to the garden.
This year I added a third variety. This one has a more lemon colored flower but the same fuzzy foliage. It seems a little more open than the original one which makes a tight spreading clump.
I may have to strike a few cuttings in the fall.