Lagarosiphon cordofanus

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

This plant is best suited for the background or midground of the aquarium depending on the tank size. Its vertical growth pattern can be used to hide equipment or create dense green walls. It should be planted in groups to achieve a bushy and natural look.

Botanical form

Stem

It features delicate, thin, and slightly curled leaves arranged in spirals along the stem. The overall appearance is feathery and elegant, providing a soft texture in the aquascape. Under high light, the internodes become shorter, resulting in a more compact form.

Growth

Fast

It exhibits a very fast growth rate, especially under optimal lighting and CO2 conditions. Frequent trimming is often necessary to prevent it from reaching the water surface too quickly. Its rapid growth makes it excellent for outcompeting algae in newly established tanks.

Substrate

None

Lagarosiphon cordofanus is an undemanding stem plant that easily anchors itself in a variety of substrates, including plain gravel, sand, or commercial aquatic soils. It produces delicate adventitious roots along its stems that pull essential nutrients heavily from the water column, making a nutrient-rich soil helpful but not strictly necessary. Providing a substrate depth of 4 to 5 centimeters ensures the slender stems are held securely in place, even in tanks with moderate water currents.

Column fertilization

Recommended

Column fertilization is the primary method of nutrient uptake for this species. It absorbs most of its required nutrients, including nitrogen, phosphorus, and potassium, directly from the water. A consistent dosing schedule is required to sustain its fast growth rate.

Root fertilization

None

While it can develop roots in the substrate, root fertilization is not strictly necessary for its survival. However, a nutrient-rich substrate or the addition of root tabs can promote stronger anchorage and slightly improve overall health. It primarily relies on the water column for its heavy nutrient needs.

Trimming

Occasional

Trimming should be done by cutting the stem at the desired height, which encourages the plant to develop side shoots. For a denser look, the cut tops can be replanted into the substrate. Regular pruning is essential to prevent the lower parts of the plant from being shaded out.

Propagation

Cuttings

Propagation is straightforward and is achieved simply by taking stem cuttings. Cuttings of about 10-15 cm in length can be pushed directly into the substrate. They will quickly develop roots and begin growing as independent plants within a few days.

Sensitivity

Moderate

It can be somewhat sensitive to sudden changes in water parameters or significant drops in nutrient availability. Very high temperatures or lack of light can cause the lower leaves to melt. It is generally tolerant of a wide range of water hardness but prefers slightly acidic to neutral pH.

Layout role

Midground, Background

It plays a vital role as a fast-growing background filler that adds vertical lines to the layout. The fine texture contrasts beautifully with broad-leaved plants like Echinodorus or Anubias. It is also highly effective in providing hiding spaces for fry and small aquatic creatures.