Mazus reptans blue
a/k/a Creeping mazus, Blue mazus.
Zone: 4 to 8, may need to mulch or protection in zone 4 and 5.
Full sun to part shade.
Mature size: 3 inch height, quick spreading groundcover. Narrow, bright green leaves form a dense, foliage carpet. Tiny, purplish-blue, tubular, orchid-like flowers with yellow and white markings appear in small clusters from late spring / early summer to frost. Semi-evergreen, low, creeping perennial.