Last year I planted Creeping Speedwell (Veronica Repens). It was a very small plant that I bought for $1.49. It did nothing last year. This year, however, it is in beautiful bloom! It has low growing, mat-forming foliage with clusters of small flowers, in this case, white flowers. Blooms during the spring and summer and is great for rock gardens, edging, borders and ground cover.
This perennial likes sun or part shade and grows to about 3" high.
