ERIGERON. Distributed mostly over North America. Perennial daisies of easy culture, though their requirements and uses in the landscape vary somewhat. Sun or light shade, reasonably well drained soil, moderate to occasional watering as noted. Hardiness varies.
karvinskianus. A trailing plant with many slender, leafy dark green stems, making broad mats or spilling over walls in dense curtains. It is seldom out of bloom and produces impressive displays of 3/4" flower heads, the rays white above and pink beneath, in spring and fall. A useful plant for small-scale ground cover, walls and containers. Hardy to 10oF or less.