With Cerastium tomentosum 'Yoyo', you get a compact form of classic snow-in-summer, valued for its woolly, silvery foliage and a late-spring flush of bright white, star-shaped flowers. Use it to soften edges and fill small spaces without overwhelming nearby plants.
Give it full sun for best flowering and tight growth. Plant it in well-drained soil, including lean, rocky, or sandy spots where many perennials struggle. Avoid rich, consistently wet ground, which can encourage overly aggressive spread and reduce vigor.
At maturity, 'Yoyo' stays low (about 4-6 inches tall) and makes a neat, ground-hugging patch. After bloom, shear it back to refresh the foliage and keep the plant compact and tidy. You can also divide or replant small sections during the growing season to thicken coverage.
Once established, it needs only light watering in most gardens. Deer and rabbits typically leave it alone, making it a reliable choice for sunny borders, rock gardens, and small slope plantings.