Propagating Cabomba aquatica (Yellow Cabomba)

How to propagate yellow cabomba, a fast feathery stem plant, by cutting and replanting healthy tops while keeping its brittle stems intact under high light.

Overview

Cabomba aquatica is a perennial stem plant from South America whose long, flexible stems carry finely divided, fan-shaped submerged leaves. It grows quickly under bright light, making it a productive background plant that responds well to regular propagation.

Because the genus produces few or no floating leaves and the stems are delicate, propagation focuses on cutting and replanting the actively growing tops rather than dividing roots.

Propagation Method

Yellow cabomba is propagated by stem cuttings. A healthy length of the upper stem is cut and replanted, where it forms new roots and continues growing while the trimmed parent stem branches and bushes out below.

Step-by-Step

Select a vigorous stem with tight, full feathery foliage at the tip.
Cut roughly 10-15 cm of the top using clean, sharp scissors.
Gently strip the leaves from the lowest 2-3 cm of the cutting.
Push the bare base into nutrient-rich substrate, spacing cuttings apart.
Leave the parent stem in place so it can produce side shoots.

Conditions for Healthy Growth

Cabomba aquatica demands high light intensity and prefers soft, slightly acidic water. Added CO2 and a nutrient-rich substrate help cuttings establish fast and keep the foliage dense and golden-green.

Lighting: high intensity for compact, full growth.
Water: soft and slightly acidic suits the plant best.
Temperature: warm, in the low-to-mid 20s C.
CO2 injection and fertilisation strongly recommended.

Trimming & Maintenance

Trim regularly to keep stems below the surface and to harvest cuttings. In low light the leaves shrink and the internodes stretch, so maintain strong lighting and prune any leggy, bare stems.

Common Challenges

The stems are flexible but delicate and the plant is considered difficult to cultivate. Algae can damage the fine submerged leaves and strong currents or grazing fish can shred them, so place cabomba in calmer, brightly lit zones.