The entire Lysimachia family does well in damp gardens.
The only thing you have to understand is that there are absolutely no nice plants in this family either.
All are invasive thugs if left untended for a year or more. But they flower like crazy! 🙂
They send underground rhizomes out in serruptious ways to invade nearby plant clumps. Constant vigilance is the only way you’ll control these plants. Having said that, they do tend to be large, heavy flowering plants that are quite attractive.
Almost all are hardy down into USDA zone 3 although some of the variegated varieties may be a little more tender.
The dwarf varieties such as L. japonica are also slightly more tender in my experience.
Soils and Sunshine
Yes. They like soil. 🙂 With almost no preference except no blue clays or standing water, this plant can be grown almost anywhere.
Yes. They like sun but will grow quite nicely in part shade gardens as well.
In other words, plant Lysimachia almost anywhere in your garden and watch it turn into an invasive weed. But a lovely flowering one.
These are done either by cuttings or by division. Most of the time, the problem isn’t getting more, it is controlling the spread of existing plants.
L. ciliata ‘Firecracker’ Burgundy colored leaves with yellow spikes reaching to 36-inches
L. clethroides (Gooseneck Loosetrife) Green leaves with white goose-necked shaped flowers. Reaching 36 inches tall.
L. punctata ‘Alexander’ (Yellow Loosestrife) Green foliage, edged with white with yellow flowers up the 24-inch tall flower spike.
L.punctata ‘Golden Alexander’ a yellow/green variegated version of above.
You can find a wide variety of them here