Encyclopaedia
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.
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6 - 32 °C
5 - 7.5
Freshwater
Medium to High
High
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
Plant profile
- Placement
- Midground
- Botanical form
- Stem
- Growth
- Fast
- Substrate
- High
- Column fertilization
- Recommended
- Root fertilization
- Recommended
- Trimming
- Occasional
- Propagation
- Cuttings
- Sensitivity
- Moderate
- Layout role
- Midground, accent, Background
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.
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.
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.
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.
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.
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.
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 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.
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.
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
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Variants and close relatives
Same atlas type, nearby scientific identity, genus, or family.
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Similar care
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