Lysimachia nummularia or Creeping Jenny is a vigorous, creeping, prostrate perennial with rounded green leaves and stems.
It is ideal for boggy areas or alternatively if used as a ground cover can take some light foot traffic.
When planted in borders it is usually chosen as an accent plant, but beware, because it can spread rapidly and crowd out other plants.
It is also suitable for a bog garden or as an aquatic marginal plant.
The cultivar Aurea (golden creeping Jenny) has yellow leaves, and is less aggressive than the species and has gained the Royal Horticultural Society's Award of Garden Merit.