Mazus is a very low growing, mat-forming perennial groundcover that grows less than 2 inches tall but spreads by creeping stems 6 to 12 inches. It has narrow, bright green leaves (to 1-inch long) that form a dense, attractive carpet which remains green throughout the growing season and well into the fall. Though listed as evergreen, it may not be so here. Tiny, purplish-blue, tubular, 2-lipped flowers with yellow and white markings appear in small clusters in late spring to early summer. Well suited to rock gardens and crevices, and as it tolerates moderate foot traffic, is wonderful between stepping stones.
Grow in average, well-drained soil in full sun to part shade. Prefers moist, rich soils and moderate moisture. Tolerates foot traffic and an infrequent mowing. Six plants per square yard are sufficient to fill in area of that size.