Anaphalis triplinervis 'Sommerschnee' (Pearl everlasting)
Sommerschnee' is an herbaceous perennial forming a spreading clump to 25cm tall, with greyish-white, narrowly elliptic leaves and clusters of small, starry, white everlasting flowers in mid and late summer.
Plant in any moderately fertile, moist but well-drained, soil. Best in full sun, but will also tolerate partial shade. It dislikes winter wet. Will reach a height of 0.3m and a spread of 0.5m after 2-5 years.