Ludwigia inclinata var. verticillata "Cuba"

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

Due to its rapid upward growth and striking appearance, it is best placed in the midground or background of the aquarium. Planting it in a staggered fashion creates a visually appealing sense of depth. Its star-like tops provide an excellent focal point when positioned correctly.

Botanical form

Stem

This variety features exceptionally narrow, needle-like leaves arranged in a whorled pattern along a thick stem. The submerged leaves develop striking red and orange hues near the surface, contrasting with greener lower sections. Its emersed form differs drastically, showcasing rounded, green leaves.

Growth

Fast

Under optimal conditions of high light and rich nutrients, this plant exhibits a very fast growth rate. It will quickly reach the water surface if left unchecked, often requiring frequent pruning. This vigorous growth helps outcompete algae when the tank is well-balanced.

Substrate

High

Ludwigia inclinata var. verticillata 'Cuba' thrives best when planted in a deep, nutrient-loaded aquasoil that provides a steady supply of iron and macronutrients. The plant requires a substrate depth of at least 6 centimeters to accommodate its expansive root system, which forcefully anchors its large, heavy crowns. While it aggressively feeds from the water column, the rich substrate acts as an essential nutrient reserve, promoting significantly larger whorls and more vivid red-orange coloration. A soft, granular soil prevents root damage while encouraging the robust basal growth necessary to support its massive stem structure.

Column fertilization

Recommended

Liquid fertilization is crucial for the health of this species, as it heavily relies on the water column for nutrient uptake. Daily dosing of iron and trace elements helps bring out intense red coloration. A balanced NPK regimen is also necessary to sustain its rapid metabolic rate.

Root fertilization

None

While it absorbs many nutrients through the leaves, a nutrient-rich substrate significantly enhances its vitality. Root tabs can be added near the base to provide a steady supply of iron and macronutrients. A strong root system helps anchor its thick stems in the substrate.

Trimming

Occasional

Frequent trimming is required to keep this fast-growing plant from shading its lower sections. Cutting the tops and replanting them is the best way to propagate and maintain a dense group. If trimmed too low, the remaining bare stems may struggle to produce healthy new shoots.

Propagation

Cuttings

Propagation is straightforward and is achieved through simple stem cuttings. Trimming healthy tops and replanting them into the substrate will yield new individual plants. Side shoots may occasionally develop after trimming, adding to the bushiness of the group.

Sensitivity

Moderate

It is exceptionally sensitive to sudden changes in water parameters or dips in CO2 concentration. Insufficient light or shading will quickly lead to the lower leaves melting and detaching. It may also stunt or twist its newly emerging leaves if micronutrients, particularly calcium or iron, are lacking.

Layout role

Midground, accent, Background

This plant serves as a magnificent, colorful focal point in Dutch-style and nature aquariums. Its fine, textured foliage contrasts beautifully with broader-leaved plants. It adds strong vertical lines and striking warm colors to the overall aquascape.