Everlasting--Helichrysum retortoides

This plant is called an everlasting because the dried flowers last forever. Well, maybe not forever, but a long time. However, on this particular species, the plant forms a mat and flowers have very short stems. I am not at all sure how those flowers could be arranged after they were picked. Maybe in a wreath? Anyway, it has lots of flowers and would make a great ground cover given the right conditions. It seems very happy at the UC Botanical Garden. I wonder if it would do well in a garden in Berkeley with normal neglect?