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Bacopa lanigera

Bacopa lanigera

Bacopa lanigera: an unusual stem plant of the Plantaginaceae family, famous for the whitish hair covering its emersed stems.

Taxonomy
Class:Liliopsida
Order:Lamiales
Family:Plantaginaceae
Genus:Bacopa
Species:Bacopa lanigera

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Water Temperature

20 - 30 °C

pH Value

5 - 7

Water type

Freshwater

Light

High

CO2

Low - High

Expected height

30 cm

Expected width

6 cm

KH

0 - 7 dKH

Species description

Bacopa lanigera is native to the tropical regions of South America, with a significant presence in Brazil (especially the Pantanal) and Paraguay. It populates sunny swamps, riverbanks, and wet floodplains. It grows mainly as a semi-emersed marsh plant, where its stems spread over wet ground or float in shallow water. It is adapted to hot, humid climates with strong direct solar exposure, flowering abundantly during the hottest months of the year. It belongs to the Plantaginaceae family and the genus Bacopa.

Care, breeding and tankmates

Prefers soft and slightly acidic water. Ideal parameters include a pH between 5.0 and 7.0, low KH hardness (0-7 dKH), and a temperature between 20°C and 30°C. It does not tolerate high saline concentrations and is sensitive to sudden pH increases. The main risk is stem rot if positioned in areas with poor water movement or if shaded by larger plants. The plant requires lots of light at the bottom level; otherwise, the basal leaves turn yellow and detach, compromising the aesthetic.

Geographic Origin and Distribution

This species originates from: Tropical South America, particularly Brazil (Pantanal) and Paraguay.

Origin

Amazon, Orinoco, and GuianasExtra-Amazon South America

Plant profile

Placement
Midground

It is best used as a midground or background accent in the aquarium. Grouping stems together creates a visually striking bush that showcases its unique texture. Ensure it is not shaded by overhanging plants, as it requires ample light.

Botanical form
Stem

This species is notable for the fine hairs covering its stems and leaves, giving it a 'woolly' or velvety appearance. The leaves are ovate, thick, and grow opposite each other along the robust stem. Emersed growth strongly displays the hairs, which persist but are less prominent underwater.

Growth
Medium

The growth rate is relatively slow to moderate, depending on light and CO2 levels. This slow pace makes it easy to maintain without the need for constant trimming. It generally does not outgrow its space quickly, making it suitable for carefully planned layouts.

Substrate
High

Bacopa lanigera has high substrate demands, thriving best in a deeply nutritious aqua soil that can provide a steady supply of essential macro and micronutrients. The plant develops a robust, extensive root system that requires a deeper substrate bed, ideally 5 to 7 centimeters, to anchor securely and fuel its robust stem growth. It heavily relies on root feeding to maintain the health of its distinctly hairy stems and prevent lower leaf loss. A nutrient-depleted or purely inert substrate will severely stunt its growth and diminish its unique botanical characteristics.

Column fertilization
Recommended

Liquid fertilization is effective since the plant readily takes up nutrients from the water column. A comprehensive fertilizer containing potassium and trace elements should be dosed regularly. Keeping nitrates at a moderate level helps maintain its compact growth form.

Root fertilization
None

A nutrient-rich substrate promotes stronger root development and thicker stems. While it can survive on column dosing alone, root tabs provide a helpful nutrient reserve. Strong roots are necessary to support its thick, fleshy structure.

Trimming
Occasional

Trim the plant by cutting the stem just above a set of healthy leaves. The cut portion can be replanted, while the bottom will develop new lateral shoots. Trimming helps to create a denser, bushier appearance over time.

Propagation
Cuttings

Propagation is easily achieved through stem cuttings. Snip the top few inches of a healthy stem and plant it directly into the substrate. The cutting will quickly develop its own root system.

Sensitivity
Moderate

It is somewhat sensitive to low light conditions, which can lead to the lower leaves rotting or dropping off. Sudden changes in water chemistry should be avoided. It generally tolerates standard aquarium medications well.

Layout role
Midground, Background

The fuzzy texture of Bacopa lanigera adds a highly unique visual element to any aquascape. It contrasts beautifully with smooth-leaved plants or fine, delicate textures. It serves as an excellent focal point in the midground.

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.

Bacopa crenata

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Bacopa serpyllifolia

Bacopa serpyllifolia

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Bacopa salzmannii

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Bacopa sp. "Colorata"

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Bacopa monnieri "Rundblättrig"

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Water Milfoil Bacopa

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Bacopa sp. "Japan"

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Bacopa australis

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Bacopa caroliniana

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Madagascar Bacopa

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Bacopa monnieri

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Bacopa monnieri 'Compact'

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Hydrotriche hottoniiflora

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Recommended companions

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Similar care

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Last updated: 06/16/2026