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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.
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Check out Bacopa lanigera on Atlarium
20 - 30 °C
5 - 7
Freshwater
High
Low - High
30 cm
6 cm
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
Plant profile
- Placement
- Midground
- Botanical form
- Stem
- Growth
- Medium
- Substrate
- High
- Column fertilization
- Recommended
- Root fertilization
- None
- Trimming
- Occasional
- Propagation
- Cuttings
- Sensitivity
- Moderate
- Layout role
- Midground, Background
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.
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.
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.
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.
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.
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.
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 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.
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.
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
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Variants and close relatives
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