Species description

Care, breeding and tankmates

Plant profile

Placement

Background

Ideally positioned in the background of medium to large aquariums due to its larger leaf size and fast growth. It can serve as a robust focal point in simpler setups or as a dense background screen. Care should be taken to prevent it from casting too much shade on smaller foreground plants.

Botanical form

Stem

Characterized by tall, sturdy stems carrying significantly larger and broader leaves than the standard variety. The foliage is typically a vibrant light green, which can take on warmer hues under intense lighting. Its larger structure provides a more imposing presence in the aquascape.

Growth

Fast

Grows rapidly, often necessitating regular maintenance to keep it in check. Its vigorous growth pattern makes it highly effective at absorbing excess nutrients and combating algae. Expect frequent pruning sessions to maintain the desired height and shape.

Substrate

None

The 'Big leaf' variety of Hygrophila polysperma shares the adaptable nature of the species, thriving in completely inert substrates like sand or gravel. It produces an extensive root system that ensures strong anchorage, supporting its robust stems and large foliage. A simple substrate depth of 4 to 6 cm is adequate, as the plant relies heavily on foliar feeding rather than substrate nutrients to sustain its rapid growth.

Column fertilization

Recommended

Readily utilizes nutrients dissolved in the water column, making liquid fertilizers highly effective. A comprehensive fertilizer regimen ensures the large leaves remain healthy and free of deficiencies. It will develop numerous adventitious roots if water column nutrients are abundant.

Root fertilization

None

Benefits from a nutrient-rich substrate, which helps support its rapid growth and large leaf mass. Root tabs can provide a helpful boost in inert substrates, encouraging a strong and expansive root network. However, it can adapt well to various substrates if liquid feeding is adequate.

Trimming

Regular

Regular trimming is essential to control its height and encourage bushier, more compact growth. Cut the stems just above a node, and new branches will readily form. The robust cuttings are perfect for replanting to expand the thicket.

Propagation

Cuttings

Propagation is straightforward via stem cuttings; simply snip the top portion and replant it into the substrate. The original stem will quickly produce lateral shoots, creating a fuller appearance. Its ease of propagation makes it a cost-effective plant for filling large areas.

Sensitivity

Moderate

Very resilient and forgiving, making it an excellent choice for beginners and newly set up aquariums. It adapts well to different water parameters and is generally unaffected by minor changes. Rarely suffers from common aquatic plant ailments when basic care is provided.

Layout role

Midground, Background

Excellent for creating a dense, fast-growing background that provides substantial volume and color. Its large leaves offer great contrast against finer-leaved plants in the midground. It also serves as an excellent natural refuge for fish and invertebrates.