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Oldenlandia salzmannii

Oldenlandia salzmannii

Oldenlandia salzmannii is a versatile, medium-growing aquarium plant ideal for midground placement, where it forms lush, compact bushes.

Taxonomy
Class:Liliopsida
Order:Gentianales
Family:Rubiaceae
Genus:Oldenlandia
Species:Oldenlandia salzmannii

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Water Temperature

20 - 28 °C

pH Value

6 - 7.5

Water type

Freshwater

Light

Medium - High

CO2

Medium - High

KH

2 - 10 dKH

Species description

Originating from the tropical and subtropical regions of Central and South America, Oldenlandia salzmannii thrives in both aquatic and semi-aquatic environments. It is typically found along the banks of rivers, streams, and in damp or marshy areas, where its roots can anchor themselves in muddy or sandy substrates. Its ability to adapt to both full submersion and periods of emersion makes it a robust and flexible species for aquariums. In nature, it often grows in dense clumps, forming carpets along the water's edge, contributing significantly to local biodiversity. Oldenlandia salzmannii belongs to the vast Rubiaceae family, a botanical group that also includes well-known plants such as coffee and Gardenia.

Care, breeding and tankmates

Maintaining stable water parameters is crucial for the health of Oldenlandia salzmannii, although the plant is relatively adaptable. Water temperature should be kept within the ideal range of 20-28 C, avoiding extreme fluctuations that could stress the plant. The ideal pH is between 6.0 and 7.5, a slightly acidic to neutral range that reflects its natural habitat. Carbonate hardness (KH) should be between 2 and 12, ensuring sufficient pH stability without excessive alkalinity. Regularly monitoring these parameters and performing weekly partial water changes helps prevent the accumulation of harmful substances and replenishes essential minerals.

Geographic Origin and Distribution

This species originates from: Central and South America.

Origin

Central America and CaribbeanExtra-Amazon South America

Plant profile

Placement
Midground

It is an excellent choice for the midground. It can be planted in groups to form a dense, bright green bush. Position it where it won't be heavily shaded by taller background plants.

Botanical form
Stem

A delicate-looking stem plant with small, bright green, opposite leaves. It has a slightly creeping and bushy growth habit naturally, making it distinct from strictly vertical stem plants.

Growth
Medium

It exhibits a moderate to fast growth rate when conditions are optimal. It responds well to CO2 and high light, which encourages it to grow more compactly.

Substrate
Medium
Column fertilization
Recommended

Regular dosing of a complete liquid fertilizer ensures the small leaves remain bright green and healthy. Micronutrients, especially iron, help prevent the new growth from becoming pale.

Root fertilization
Optional

A nutrient-rich substrate or the addition of root tabs will significantly improve its growth rate and bushiness. Strong roots allow the plant to better anchor and branch out.

Trimming
Occasional

It responds exceptionally well to regular topping. Trim the tops to encourage side shoots and a much denser appearance. The trimmed tops can be replanted.

Propagation
Cuttings

Very easy to propagate by taking stem cuttings. Simply snip the healthy top portions and replant them directly into the substrate where they will quickly root.

Sensitivity
Moderate

It can drop its lower leaves if heavily shaded or if the lighting is insufficient. It requires decent light penetration all the way to the substrate to stay bushy at the base.

Layout role
Midground, group

Excellent for creating dense, bright green midground transitions. It's often used in Nature Aquarium layouts to create a soft bridge between carpeting plants and taller background stems.

Image gallery

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

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Last updated: 06/16/2026
Oldenlandia salzmannii Care Guide & Tank Setup | Atlarium