
Creeping jenny
Lysimachia nummularia
Primulaceae

Lysimachia nummularia
Primulaceae
Lives wild in Albania, Austria, Baltic States, Belgium, Bulgaria, Czechoslovakia, Denmark, France, and 17 more countries.
Introduced to Australia, Canada, Finland, Russia, and United States.
Lysimachia nummularia is a species of flowering plant in the primrose family Primulaceae. Its common names include moneywort, creeping jenny, herb twopence and twopenny grass.
Plants that cope with low light, soft water and a beginner’s mistakes, and how to plant them so they grow.
Two aquariums from Southeast Asia: calm forest streams and peat swamps with soft, brown water, and fast mountain streams with cool, oxygen-rich water.
A coldwater aquarium with European fish and plants, without a heater. The water follows the seasons, and summer heat is the biggest problem.
Light, nutrients and CO₂ in balance, low tech versus high tech, and how to read from the leaves what your plants are missing.