Alternanthera reineckii 'Rot' ('Red')

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

It is best positioned in the midground or foreground of the aquarium, depending on the tank size. Its compact nature allows it to create beautiful, dense bushes that do not overshadow other plants. When planted in groups, it forms a striking focal point that draws the eye. Ensure it is placed in an area that receives unobstructed light for optimal development.

Botanical form

Stem

This plant features sturdy, upright stems adorned with decussate leaves that exhibit a striking red to magenta hue on the underside. The leaves are typically lanceolate and somewhat smaller than the standard species, giving it a more compact appearance. Its structure is quite robust, allowing it to withstand moderate water flow. The dense foliage creates a beautifully textured visual element in the aquascape.

Growth

Medium

The growth rate is generally moderate when provided with optimal lighting and CO2 injection. Under lower light conditions, growth slows down significantly and the plant may struggle. Regular fertilization will encourage a steady and manageable upward progression. Overall, it requires less frequent maintenance compared to faster-growing stem plants.

Substrate

High

This exceptionally red variety exhibits strong root growth that necessitates a high-capacity nutrient substrate like aqua soil. The roots delve deeply to extract large quantities of nutrients, particularly iron and phosphates, essential for its vivid pigmentation. To support its structural integrity and nutrient demands, a substrate layer of 5 to 6 centimeters is recommended.

Column fertilization

Recommended

Liquid column fertilization is highly recommended to supply readily available nutrients to the leaves. A comprehensive liquid fertilizer containing both macro and micronutrients should be dosed regularly. Iron supplements are particularly beneficial to enhance the red pigmentation. Consistent dosing schedules help prevent deficiencies and promote vigorous foliage development.

Root fertilization

None

While it can absorb nutrients from the water column, it benefits significantly from a nutrient-rich substrate. Root tabs placed near the base can provide a steady supply of essential elements, promoting stronger root development. A fertile soil base encourages thicker stems and more robust overall growth. This dual feeding approach maximizes the plant's health and coloration.

Trimming

Occasional

Trimming should be done by cutting the stem just above a healthy node using sharp scissors. This encourages the plant to develop side shoots, resulting in a bushier appearance over time. The replanted tops will quickly root and form new plants, allowing for easy expansion. Regular pruning is necessary to maintain its compact shape and prevent lower leaves from being shaded out.

Propagation

Cuttings

Propagation is straightforward and is achieved primarily through stem cuttings. Simply cut a healthy top portion of the stem and plant it directly into the substrate. Ensure the cutting has at least a few leaves and a healthy node to promote rapid root growth. With optimal conditions, the new cuttings will establish themselves within a few days.

Sensitivity

Moderate

This species is somewhat sensitive to sudden fluctuations in water parameters, particularly pH and temperature. It does not tolerate prolonged periods of shading, which will cause it to quickly drop its lower leaves. Algae growth on its leaves can be a problem if nutrients and light are not properly balanced. Extreme care should be taken when using chemical treatments, as it can be delicate.

Layout role

accent, Midground, Background

It plays an excellent role as a colorful midground accent, adding depth and contrast to green aquatic landscapes. Its smaller leaf size makes it suitable for both large and small aquariums without overwhelming the layout. It pairs beautifully with light green foreground carpets or dark hardscape materials. Its striking coloration draws attention and serves as a natural focal point.