This compact rock cress forms a low, mounding mat of gray-green foliage that disappears beneath sweetly fragrant, four-petaled white flowers in late spring. Its cascading habit makes it ideal for tumbling over rock walls, edging pathways, or filling gaps between paving stones, and a light shearing after bloom keeps the mat dense and encourages a tidy appearance through summer. It is a favourite early-season nectar source for bees and butterflies.