Ludwigia sphaerocarpa

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

Due to its striking size and creeping growth habit, it is best placed in the foreground or midground. It should not be shaded, as it requires intense lighting to stay low and compact. It makes an excellent focal point when planted near hardscape elements.

Botanical form

Stem

It features large, broad, and somewhat rigid leaves that grow in a tight, rosette-like fashion along a creeping stem. The leaves can develop beautiful orange, bronze, or red hues under intense light. Its thick stems and robust appearance give it a very prehistoric, architectural look.

Growth

Medium

This plant has a relatively slow to moderate growth rate, which is unique among Ludwigia species. Its slow growth makes it highly manageable in the aquascape, requiring less frequent trimming. It takes time to establish an extensive root system before taking off.

Substrate

High

Ludwigia sphaerocarpa is uniquely demanding of the substrate, thriving best in very rich aqua soils that support its slow, creeping growth habit and large, rounded leaves. Because it stays relatively low and compact, a substrate depth of 2-3 inches is vital for its thick roots to firmly anchor and search for deep nutrients. Supplementing an inert substrate with high-quality root tabs is essential if aqua soil is not used.

Column fertilization

Recommended

Consistent liquid dosing of a comprehensive fertilizer is highly recommended to support its large leaves. However, it seems to draw a significant portion of its needs from its extensive root system. Maintaining stable water column nutrients prevents algae from settling on its slow-growing leaves.

Root fertilization

Recommended

A deep, nutrient-rich substrate is absolutely critical for the success of Ludwigia sphaerocarpa. It develops a massive root system and responds incredibly well to root tabs or aquasoil. Without strong substrate nutrition, the plant will struggle to grow and may slowly decline.

Trimming

Occasional

Trimming is rarely needed due to its slow, creeping growth habit. When necessary, stems can be cut to prevent it from encroaching on other plants. The trimmed portions can be replanted, though they may take a while to root and resume growth.

Propagation

Cuttings

Propagation is done by taking cuttings from the creeping stem. Ensure the cuttings have a few healthy leaves and gently plant them into a rich substrate. Patience is required, as the cuttings will take time to establish new roots.

Sensitivity

Moderate

It is quite sensitive to poor substrate conditions and lack of light, which will cause it to grow leggy and lose its unique shape. It requires stable CO2 levels and does not tolerate being shaded. Once established in optimal conditions, it is relatively robust.

Layout role

Midground

It is an exceptional plant for creating a bold, textural focal point in the midground or foreground. Its large, colorful rosettes contrast sharply with delicate carpeting plants or fine-leaved stem plants. It is highly sought after for advanced aquascapes aiming for high contrast.