Ludwigia × lacustris

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

Its moderate size and attractive coloration make it well-suited for the midground or background of the aquarium. Planting it in dense, staggered groups creates a beautiful, bushy thicket. It serves as an excellent transitional plant between bright green foreground species and taller background stems.

Botanical form

Stem

This plant is a naturally occurring hybrid, displaying lanceolate leaves that are wider than those of L. arcuata but narrower than L. repens. The foliage features a pleasant mix of olive green, copper, and reddish tones depending on the lighting intensity. Its stems grow upright but tend to branch out more readily than other stem plants.

Growth

Fast

Under favorable conditions of medium to high light and sufficient nutrients, it exhibits a moderate to fast growth rate. It requires periodic pruning to keep it from taking over its designated space. Without CO2, its growth slows down to a more manageable, steady pace.

Substrate

Medium

Performs well in a moderately nutrient-rich substrate, such as aqua soil or enriched gravel, which provides adequate nourishment for its root system. A substrate depth of 1.5 to 2 inches is sufficient for the roots to establish a strong hold. While it can draw nutrients from the water column, adding root tabs periodically will promote thicker stems and healthier growth.

Column fertilization

Recommended

Consistent liquid fertilization is important to prevent the lower leaves from yellowing and dropping off. A complete fertilizer containing nitrogen, phosphorus, potassium, and trace elements will keep the plant robust. Iron supplements are particularly useful for bringing out the deeper red and orange pigments in the upper foliage.

Root fertilization

None

While it draws nutrients well from the water column, a nutrient-rich substrate promotes stronger, thicker stems. Using a quality aquasoil or placing root tabs near its base encourages a vigorous root system. Strong roots help it better withstand the flow in heavily filtered tanks.

Trimming

Occasional

Regular pruning encourages the plant to develop lateral side shoots, leading to a denser, bushier appearance. You can top the plant and replant the healthy cuttings to expand your group. If the lower stems become bare due to shading, they should be removed and replaced with fresh top cuttings.

Propagation

Cuttings

Propagation is very straightforward; simply cut a healthy stem and plant it directly into the substrate. The cuttings will rapidly develop new roots and continue growing. It is one of the easier stem plants to multiply quickly through regular trimming.

Sensitivity

Moderate

It is generally a robust plant but will shed its lower leaves if deprived of adequate light. Drastic fluctuations in water parameters may temporarily halt its growth or cause minor leaf melt. It is reasonably tolerant of varied water hardness but prefers slightly acidic conditions.

Layout role

Midground, Background

It adds warmth and texture to the aquascape, bridging the gap between green and intense red plants. Its slightly muted copper-red tones provide a natural, harmonious look in nature-style aquariums. It works exceptionally well in creating a dense, colorful midground bush.