Erigeron karvinskianus (Fleabane):
That pretty little daisy you see growing in the cracks in paving and walls in late summer....
[Collect Only]
Pachyphragma macrophyllum:
Great for ground cover in shady areas,glossy round, green leaves and clusters of white flowers in the spring. Hardy. Up to 45cm.
Saxifraga x urbium (London Pride):
Wiry stems topped with dainty pale pink flowers over ground evergreen rosettes of green leaves with creamy yellow markings.