Creeping Jenny care guide
Creeping Jenny (Lysimachia nummularia) — low light, 15-26 °C, pH 6-8, no CO2.
Overview
Creeping Jenny (Lysimachia nummularia) is a round-leaved plant of the family Primulaceae, grown as an aquarium plant. A versatile creeping plant with round, coin-shaped leaves along its stems. While primarily a pond and terrestrial plant, it adapts well to submerged aquarium life. Very easy to grow and tolerates cool water, making it suitable for both tropical and temperate setups.
Taxonomy
- Family: Primulaceae
- Genus: Lysimachia
- Scientific name: Lysimachia nummularia
- Common synonyms: Moneywort, Lysimachia nummularia
Habitat
Lysimachia nummularia originates from Europe, where it grows in freshwater marshes, ditches and slow-moving streams, frequently emersed on seasonally flooded ground.
Growth requirements
- Lighting: low
- CO2: not required
- Temperature: 15-26 °C (59-79 °F)
- pH: 6-8
- GH: 3-15 °dGH
- Substrate: any
- Maximum height: 30 cm
- Growth rate: fast
- Nutrient demand: low
- Recommended placement: midground
- Typical trim interval: 10 days
Placement
In aquascapes this plant suits the midground.
Propagation
Propagation is by stem cuttings replanted into the substrate; daughter plants are separated once they have formed several leaves and visible roots.
Common issues
Pale or stunted new growth usually signals a nutrient or iron deficiency, while algae on older leaves often follows light that exceeds the available nutrients or CO2; correcting fertilisation and trimming affected parts resolves most cases.