Lysimachia nummularia, commonly known as moneywort or creeping jenny, is a perennial aquatic plant belonging to the Primulaceae family. This species is notable for its vigorous growth and ability to thrive in damp environments.

Origin

Lysimachia nummularia is native to Europe but has been introduced to North America, where it can become invasive in certain regions due to its aggressive spreading nature in favorable conditions like wet ground or near ponds16.

Light Conditions

This plant prefers high light for optimal growth and coloration, especially for the cultivar ‘Aurea,’ which exhibits bright yellow foliage. While it can tolerate lower light conditions, stronger lighting is recommended to enhance its vibrant colors26.

Water Conditions

Lysimachia nummularia thrives in a range of water conditions:

• Temperature: It prefers temperatures between 10°C to 26°C (50°F to 79°F), with some tolerance down to 4°C26.
• pH Level: The ideal pH range is between 6 and 826.
• Water Hardness: It can adapt to both soft and hard water, with a general hardness tolerance of 0 to 30°dGH26.

How to Plant

1. Location: Choose a spot that mimics its natural habitat—damp or wet areas. It can be planted in garden beds, ponds, or aquariums.
2. Propagation:
   • In emersed conditions, it can be propagated by cuttings. Simply take sections of the stem and plant them in moist soil or water.
   • For submerged growth, ensure that the cuttings are placed in nutrient-rich substrate and provide adequate light45.
4. Care: Regularly check for nutrient levels, particularly nitrates (NO3), as deficiencies can hinder growth and color vibrancy. Supplementing with CO2 can also enhance growth but is not strictly necessary for this hardy plant23.

• Lysimachia nummularia is not only valued for its ornamental qualities but also serves as a functional ground cover in gardens and aquatic settings due to its resilience and adaptability.