Riparian pond plants: a complete guide to species, care, and benefits

Having a pond in the garden is an exceptional way to create a serene, relaxing and lively environment, where the decorative value It merges with the ecological function provided by the different aquatic plants. sound of water, the variety of fish and especially the richness of riparian, marsh, oxygenating and floating plants turn these places into authentic oases of biodiversity and beauty.

Types of pond plants: discover their diversity and benefits

The universe of aquatic plants is very broad and each group performs ecological and ornamental functions, essential for the pond balance. Below are the main types, their most important species and the care and considerations for its cultivation.

Oxygenating plants

Oxygenating plants, although their presence goes unnoticed as they are almost completely submerged, are key to maintaining healthy water. Their ability to absorb minerals and carbon dioxide reduces algae growth and maintains pond clarity. It is recommended to place between 3 and 4 oxygenating plants per square meter, pruning them regularly due to their rapid growth.

• Ceratophyllum demersum (Foxtail): Hardy perennial, it floats in water without roots and requires good light. It doesn't tolerate severe frost.
• Elodea canadensis: It prefers nutrient-rich waters, helping to oxygenate and provide shelter for invertebrates.
• Myriophyllum verticillatum / aquaticum: It produces oxygen, is easy to care for and is sometimes considered invasive.
• Vallisneria gigantea / tortifolia: Long ribbon-like leaves, highly adaptable and resistant to different temperatures.
• Ranunculus aquatilis: Beautiful floating flowers, ideal for calm ponds.

Floating plants

Floating plants partially cover the surface, regulating the temperature, oxygenating the water and preventing the appearance of algaeIt's key to not cover more than half the surface to maintain balance and prune frequently.

• Lemna minor (Duckweed): Small oval leaves and great resistance, effective against algae.
• Pista stratiotes (Water lettuce): Thick rosette leaves, great filtration capacity.
• Salvinia natans / auriculata: It creates carpets, shelter and food for small fish.
• Hydrocharis morsus-ranae: Lively, decorative due to its floating leaves and white flowers.
• Eichhornia crassipes (Water Hyacinth): Very ornamental for its purple flowers.
• Trapa natans: Marketable, with rose-shaped and resistant leaves.

Shore and riparian plants

Shore plants, or riparian plants, are perfect for creating a natural transition between water and garden, concealing artificial elements and protecting the banks from erosion and water level changes. They provide refuge for wildlife and flowers that add color and texture.

• Allium karataviense: Similar to dandelion, ornamental.
• Caltha palustris: Dark leaves and yellow flowers, grows in humid areas.
• Carex muskingumensis / pendula / riparia: Different heights and shapes, ideal for shade.
• Mint water: Intense aroma, oval leaves and pink or lilac flowers.
• Primula rosea: Intense pink flowering, great ornamental value.

Marsh plants: transition and sustainability

Marsh plants inhabit the margins of rivers, lakes and wetlands, acting as natural filter and habitat for wildlifeThey are usually found in areas with shallow water, but they are not always submerged. They are grown in moist soil, near water, without being completely submerged.

• Cyperus papyrus (Papyrus): Stems with star-shaped leaves, very resistant.
• Equisetum arvense (Horsetail): Upright stems, excellent for borders.
• Iris sibirica / pseudacorus: Attractive flowering, ideal for wet banks.
• Typha latifolia: Elongated leaves and brown spike, very robust.
• Juncus (glauca, maritimus, inflexus): Structural and decorative plants.
• Lysimachia, Pontederia: Carpeting and colorful species.
• Mentha aquatica: Very vigorous, useful both in natural and decorative riverbanks.

Deepwater plants for ponds

These species grow submerged in areas between 40 and 90 cm deep, oxygenating the water and providing beauty with its large leaves and floating flowers.

• Nymphaea (Water Lilies): The best known, with showy flowers and round leaves.
• Nelumbo nucifera (Lotus flower): Large flowers and leaves that provide shade, reducing algae.

Ecological functions and benefits of riparian and marsh plants

• Bank stabilization: They will prevent erosion and ensure the quality and cleanliness of the water.
• Filtration: They retain contaminants and nutrients, improving the transparency and health of the water.
• Habitat: Shelter and food for birds, amphibians, fish and insects.
• Landscape improvement: They add ornamental value and connect the water to the land.

Essential care of pond plants

Irrigation is no longer a concern for aquatic plants, but there are other key factors. Use heavy and clayey substrates facilitates rooting. Sunlight is essential, as well as the contribution of CO2 and nutrients through water. Use liquid fertilizer only when the plant receives sufficient light and carbon dioxide. Monitor water parameters and use filtration systems if there are fish. Oxygenating and floating plants will need frequent pruning to prevent overgrowth.

Planting areas in the pond

1. Shore area: Plants on the edge, in moist substrate, only occasionally flooded.
2. Marsh area: Directly on the wet margin, they can grow in water up to 15 cm.
3. Intermediate zone: Aquatic plants at 40 cm depth, in baskets with substrate.
4. Water lily area: Depths from 40 to 120 cm depending on the variety, in calm waters.
5. Oxygenating zone: Essential for breaking down bacteria and preventing algae. 5 clusters per cubic meter of water is a guideline.
6. Floating area: They cover the surface, protecting it from algae and providing shade. Remove the excess so that it doesn't cover more than a third of the water.

Frequently Asked Questions About Riparian and Pond Aquatic Plants

• What role do they play? Beyond aesthetics, they contribute to the water purification, algae control and refuge for wildlife.
• What do they need to live? Mainly sunlight, nutrients, CO2, and adequate temperatures. They tolerate cold better than extreme heat.

Choosing and combining correctly riparian, marsh and aquatic plants You'll have a healthy, biodiverse, and attractive pond year-round. For more information on specific care, please refer to our article. about the gardens of Aranjuez, which exemplifies how to integrate them into a reference landscape design.