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Ludwigia "Rubin"

Ludwigia "Rubin"

Ludwigia "Rubin" is a striking red stem plant ideal for the midground, celebrated for its rapid growth and vibrant ruby coloration. It serves as an excellent focal point, requiring medium to high light and consistent care to achieve its most intense hues.

Taxonomy
Class:Liliopsida
Order:Myrtales
Family:Onagraceae
Genus:Ludwigia
Species:Ludwigia "Rubin"

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Water Temperature

6 - 32 °C

pH Value

5 - 7.5

Water type

Freshwater

Light

Medium to High

CO2

High

KH

2 - 15 dKH

Species description

Ludwigia "Rubin" is a specially cultivated variety, rather than a wild species with a specific natural habitat. It is believed to be a horticultural hybrid or selection, likely derived from various Ludwigia species native to North and South America, where many members of this genus thrive in diverse aquatic and semi-aquatic environments such as marshes, slow-moving rivers, and ditches. This specific cultivar has been selectively bred to enhance its production of red pigments, making it a highly sought-after plant in aquascaping. Despite its cultivated origin, it retains the robust nature and adaptability characteristic of wild Ludwigia species. Belonging to the Onagraceae family, Ludwigia "Rubin" exemplifies how genetic selection can dramatically enhance specific aesthetic characteristics in aquatic plants.

Care, breeding and tankmates

This Ludwigia cultivar exhibits remarkable tolerance to a wide range of water parameters, making it suitable for many aquarium setups. The ideal water temperature spans from 6.0 to 32.0 C, though a more stable range between 22-28 C is optimal for vigorous growth. pH values can safely range from 5.0 to 7.5, and carbonate hardness (KH) is tolerated between 2.0 and 15.0. While adaptable, consistency in parameters is often more critical than adhering strictly to optimal values; large fluctuations can stress the plant and potentially lead to melting or slowed growth. Softer, slightly acidic water with good CO2 injection tends to promote the most vibrant coloration.

Geographic Origin and Distribution

This species originates from: Cultivar.

Origin

Selective breeding and cultivarsExtra-Amazon South AmericaNorth America

Plant profile

Placement
Midground

Position this plant in the midground or background where it can receive maximum light. Planting it in a dense cluster creates a breathtaking, vibrant red focal point. It provides a striking visual contrast when placed next to light green, finely textured flora.

Botanical form
Stem

The plant is characterized by its broad, ovate leaves that turn a spectacular, deep ruby-red under intense light. Both the upper and lower surfaces of the leaves, as well as the stem, display this intense coloration. The growth habit is generally upright.

Growth
Fast

It exhibits a relatively fast growth rate under high-tech conditions. It quickly reaches toward the light, requiring regular maintenance to keep it compact. The fast growth helps absorb excess nutrients from the water column.

Substrate
High

Ludwigia "Rubin" demands a fertile, nutrient-loaded substrate to reach its full potential and display its breathtaking dark red leaves. It rapidly establishes an extensive root network that securely binds to high-quality aquatic soils. Providing a thick substrate bed of 2 to 3 inches ensures sufficient room for nutrient foraging and excellent physical stability.

Column fertilization
Recommended

Consistent daily or weekly dosing of a complete liquid fertilizer is highly recommended. Special attention should be given to iron levels, as a deficiency will quickly result in faded colors. Balanced nitrogen and phosphorus prevent stunted growth.

Root fertilization
Recommended

A fertile substrate is very beneficial, supporting the plant's rapid growth and robust structure. Root tabs are an excellent way to supplement nutrients directly to the root zone. A healthy root system ensures the plant remains anchored and vigorous.

Trimming
Occasional

Frequent pruning is necessary to maintain a bushy shape and prevent the lower portions from becoming shaded. Trimming the tops encourages lateral branching, resulting in a denser cluster. The cut portions can be easily replanted.

Propagation
Cuttings

Propagation is simple and is done by taking cuttings from healthy stems. Plant the cuttings directly into the substrate, ensuring they receive plenty of light. They will quickly root and establish themselves as independent plants.

Sensitivity
Moderate

It is highly dependent on high light; insufficient illumination will cause the lower leaves to drop and the color to turn dull green. It is generally hardy but prefers stable, clean water conditions. Avoid placing it in shaded areas of the tank.

Layout role
Midground, accent, Background

Ludwigia 'Rubin' is an outstanding accent plant, perfect for drawing the viewer's eye. Its intense red color adds warmth and depth to any aquascape. It is frequently utilized to create bold, dramatic contrasts in heavily planted layouts.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Ludwigia repens "Mesakana"

Ludwigia repens "Mesakana"

Ludwigia repens "Mesakana"

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Ludwigia × lacustris

Ludwigia × lacustris

Ludwigia × lacustris

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Ludwigia palustris × repens

Ludwigia palustris × repens

Ludwigia palustris × repens

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Ludwigia sp. 'Atlantis'

Ludwigia sp. 'Atlantis'

Ludwigia sp. 'Atlantis'

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Creeping Primrose-willow

Creeping Primrose-willow

Ludwigia repens

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Ludwigia palustris "Super Red"

Ludwigia palustris "Super Red"

Ludwigia palustris "Super Red"

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Ludwigia repens × arcuata

Ludwigia repens × arcuata

Ludwigia repens × arcuata

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Ludwigia arcuata

Ludwigia arcuata

Ludwigia arcuata

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Mexican Primrose-willow

Mexican Primrose-willow

Ludwigia octovalvis

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Ludwigia brevipes

Ludwigia brevipes

Ludwigia brevipes

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Ludwigia ovalis

Ludwigia ovalis

Ludwigia ovalis

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Ludwigia ovalis 'Pink'

Ludwigia ovalis 'Pink'

Ludwigia ovalis 'Pink'

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Ludwigia sedoides

Ludwigia sedoides

Ludwigia sedoides

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Ludwigia mullertii

Ludwigia mullertii

Ludwigia mullertii

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Ludwigia pilosa

Ludwigia pilosa

Ludwigia pilosa

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Ludwigia pulvinaris

Ludwigia pulvinaris

Ludwigia pulvinaris

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Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

Orange dwarf crayfish (CPO)
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Orange dwarf crayfish (CPO)

Cambarellus patzcuarensis "Orange"

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Ramshorn Snail
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Acorus gramineus

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Malaysian Trumpet Snail

Melanoides tuberculata

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Green babaulti shrimp
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Green babaulti shrimp

Caridina cf. babaulti "Green"

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Blueberry Tetra
Fish

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Hyphessobrycon wadai

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Amblystegium riparium

Amblystegium riparium

Amblystegium riparium

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Anubias barteri var. nana 'Golden Heart'

Anubias barteri var. nana 'Golden Heart'

Anubias barteri var. nana 'Golden Heart'

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Anubias barteri var. nana 'Petite' ('Bonsai')

Anubias barteri var. nana 'Petite' ('Bonsai')

Anubias barteri var. nana 'Petite'

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Amblystegium serpens

Amblystegium serpens

Amblystegium serpens

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White Pearl Shrimp
Invertebrate

White Pearl Shrimp

Neocaridina zhangjiajiensis var. White

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Daggerblade Grass Shrimp
Invertebrate

Daggerblade Grass Shrimp

Palaemon pugio

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Blackline Tetra
Fish

Blackline Tetra

Hyphessobrycon scholzei

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Anubias barteri var. nana

Anubias barteri var. nana

Anubias barteri var. nana

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Asian apple snail
Invertebrate

Asian apple snail

Pila ampullacea

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Bladder snail
Invertebrate

Bladder snail

Physella acuta

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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Ludwigia inclinata var. verticillata "Pantanal"

Ludwigia inclinata var. verticillata "Pantanal"

Ludwigia inclinata var. verticillata "Pantanal"

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Ludwigia repens 'Rubin'

Ludwigia repens 'Rubin'

Ludwigia repens 'Rubin'

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Ludwigia sp. 'Super Red'

Ludwigia sp. 'Super Red'

Ludwigia sp. 'Super Red'

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Ludwigia perennis

Ludwigia perennis

Ludwigia perennis

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Ludwigia sp. 'Dark Orange'

Ludwigia sp. 'Dark Orange'

Ludwigia sp. 'Dark Orange'

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Ludwigia inclinata var. verticillata 'Curly'

Ludwigia inclinata var. verticillata 'Curly'

Ludwigia inclinata var. verticillata 'Curly'

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Ludwigia sphaerocarpa

Ludwigia sphaerocarpa

Ludwigia sphaerocarpa

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Ludwigia inclinata var. verticillata "Cuba"

Ludwigia inclinata var. verticillata "Cuba"

Ludwigia inclinata var. verticillata "Cuba"

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Marsh Ludwigia

Marsh Ludwigia

Ludwigia palustris

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Ludwigia sp. "Guinea"

Ludwigia sp. "Guinea"

Ludwigia sp. "Guinea"

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Ludwigia senegalensis

Ludwigia senegalensis

Ludwigia senegalensis

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Floating primrose-willow

Floating primrose-willow

Ludwigia peploides

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Ludwigia inclinata var. verticillata "Araguaia"

Ludwigia inclinata var. verticillata "Araguaia"

Ludwigia inclinata var. verticillata "Araguaia"

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Ludwigia inclinata

Ludwigia inclinata

Ludwigia inclinata

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Glandular Ludwigia

Glandular Ludwigia

Ludwigia glandulosa

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Ludwigia inclinata "Green"

Ludwigia inclinata "Green"

Ludwigia inclinata "Green"

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Last updated: 06/16/2026
Ludwigia "Rubin" Care Guide & Tank Setup | Atlarium