Ludwigia repens 'Rubin'

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

This plant is best placed in the midground to background, depending on how often it is trimmed. Its deep red color makes it a powerful focal point in the aquarium. It should be planted in groups to create a bold, colorful statement.

Botanical form

Stem

It is known for its stunning, deep wine-red leaves that are slightly narrower than the standard L. repens. The entire plant, including the stems, takes on this rich coloration under strong light. The stems are somewhat rigid and grow upright.

Growth

Medium

It has a moderate to fast growth rate when provided with ideal conditions. Regular pruning is necessary to maintain its shape and prevent it from reaching the surface too quickly. Its steady growth makes it relatively easy to manage.

Substrate

High

Ludwigia repens 'Rubin' requires a deeply enriched substrate packed with macronutrients and iron to sustain its signature deep red foliage. The plant's aggressive root system anchors best in a fine, porous aqua soil that facilitates optimal nutrient exchange. A substrate layer of around 2.5 inches (6 cm) is ideal to prevent the plant from floating and to encourage robust lower stems.

Column fertilization

Recommended

A comprehensive liquid fertilizer program is essential. High levels of iron and micronutrients are necessary to sustain the deep red pigmentation. Adequate macronutrients ensure robust, healthy stems and leaves.

Root fertilization

Recommended

A nutrient-rich aquasoil or the addition of root tabs is highly beneficial. The plant develops a strong root network that draws heavily from the substrate. Good root nutrition leads to thicker stems and larger, healthier leaves.

Trimming

Regular

Trim the plant frequently to encourage a bushy, dense growth habit. Cut the stems above a node, and the plant will produce multiple side shoots. Replant the healthy tops to expand the grouping.

Propagation

Cuttings

Propagation is easily achieved through stem cuttings. Snip the top portions of healthy stems and plant them into the substrate. They will establish roots quickly and continue growing.

Sensitivity

Moderate

It is sensitive to low light, which will cause the deep red color to fade to a brownish-green. It also requires good water circulation to deliver nutrients efficiently and prevent algae. Shading of the lower leaves will lead to leaf drop.

Layout role

Midground, group, accent

L. repens 'Rubin' is one of the best plants for creating a striking, deep red focal point. Its dark coloration contrasts dramatically with bright green plants. It is a staple in Dutch-style aquascaping for its reliable and intense color.