Species description

Care, breeding and tankmates

Plant profile

Placement

Background

Due to its striking, feathery appearance and large overall diameter, it serves perfectly as a solitary focal point or a midground to background feature in larger tanks. It requires ample space, as its finely divided leaves spread out widely and can easily shade adjacent plants. It should be planted where it receives direct, unobstructed light and good water flow. Frequent pruning is necessary to maintain its bushy shape and prevent it from reaching the surface too quickly.

Botanical form

Stem

The submerged form of H. balsamica is entirely different from its emersed state. Underwater, it develops spectacular, deeply pinnate, finely divided leaves that resemble dill or certain Myriophyllum species, though much thicker and fleshier. The overall plant is a bright, vivid light green, with thick, upright stems that can become quite fragile. The emersed form has solid, entire leaves and is highly toxic.

Growth

Fast

Under high light, high CO2, and rich nutrient conditions, its growth rate is very fast. The stems will quickly ascend towards the light, and lateral shoots will form readily if the top is pruned. In lower tech setups, it will rapidly degrade and die off. Its fast metabolism requires diligent maintenance, including frequent trimming and replanting of the tops to keep the stand looking fresh and bushy.

Substrate

High

A high-quality, nutrient-rich aquarium soil is highly recommended to support its rapid growth and extensive root system. While it can theoretically grow in inert substrates heavily supplemented with root tabs, active soil provides the stable, acidic environment it prefers. A deep substrate allows it to anchor its thick, fleshy stems securely. The rich soil acts as a crucial buffer to complement heavy water column dosing.

Column fertilization

Recommended

Aggressive liquid column fertilization is required to keep pace with its rapid growth. A complete liquid fertilizer dosed daily ensures that the plant does not exhaust the water column of essential trace elements and potassium. Iron is particularly important to maintain the pale, striking green of its finely cut leaves. Stunted new growth or yellowing is an immediate sign that column nutrients are insufficient.

Root fertilization

Required

Root fertilization is an excellent way to ensure the long-term health of this demanding species. Using a nutrient-rich aquasoil or regularly adding root capsules directly beneath the stems will promote thick, sturdy growth and prevent the lower sections from rotting. A strong root base allows the plant to recover quickly from the severe pruning necessary to maintain its shape. It feeds heavily from both the roots and the leaves.

Trimming

Occasional

Trimming is done by cutting the upper part of the stem. The rooted section will branch out, resulting in a denser, bushier appearance. The trimmings can be readily replanted to start new stands.

Propagation

Cuttings

Propagation is straightforward through stem cuttings. Snip the healthy top portion of the stem and replant it deep into the substrate. The original stem will readily produce new side shoots from the remaining nodes, creating a denser plant. Ensure that cuttings have plenty of light to encourage rapid rooting. Remember to handle emersed cuttings with extreme care, as their sap is highly toxic to aquarium inhabitants.

Sensitivity

Moderate

Note that emersed grown stems contain compounds toxic to fish and must be acclimated carefully before submerging. Submersed forms are safe but can be prone to algae if flow is poor. It requires high light; shading causes it to drop lower leaves.

Layout role

Background

Its feathery, light-green foliage makes it a superb focal point or contrasting background plant. It breaks up the monotony of solid, broad-leaved plants. It brings a soft, intricate texture to any layout.