Simon van der Velde

Aquatic Plant Grower

Lysimachia nummularia

Lysimachia the edges green and depletes nutrients

Fast-growing ground coverHardySun and shade

Tip from SimonLysimachia the fastest way to turn bare edges and rocks green; it creeps along the bank and hangs beautifully over the water. As it grows, it absorbs nutrients that algae would otherwise use. Plant it in a basket with STEP ONE at -1 cm—meaning 1 cm of water above the basket’s rim. Don’t place any stones on top of it, as that will cause it to rot. Shallower water provides more heat and light, resulting in faster growth.

About this product

Lysimachia, also known as Lysimachia nummularia, is a low-growing marsh plant that quickly covers pond edges and shallow areas. This groundcover helps camouflage pond edges and contributes to a healthy pond by absorbing nutrients from the water. Thanks to its sturdy roots and rapid growth, it keeps the soil stable and reduces space for unwanted plant growth. A practical plant with a natural look.

What makes this product special

Lysimachia out for its creeping growth habit and small yellow flowers that resemble buttercups. The round leaves grow directly opposite each other on the stem, something few pond plants do. It grows in both moist soil and shallow water, forming a dense carpet. The runners can also develop as floating plants, but are easy to trim if you want to contain the plant. Ideal for the water’s edge, marsh areas, or as a green transition between water and garden.

Quality and origin

Our water pennywort plants are grown without chemical fertilizers in our own nursery and are fully hardy. The plant returns every year and can last for decades. For a balanced pond, we recommend 2 baskets, each containing 4 marsh plants, per 1,000 liters of water—a total of 8 marsh plants. This makes it easy to create a sustainable, green border that helps maintain clear and stable pond water.

Practical Information

Delivery includes:
• 4x Lysimachia Lysimachia nummularia)
• 1x Professional pond basket (L19xW19xH10 cm)
• 1x Special pond plant clay (800 grams)
• 1x Soil substrate (800 grams)
• 1x Cover gravel (400 grams)
• 1x Aquatic plants (8 grams)
• Includes detailed instructions and pond planting advice

Frequently Asked Questions