Propagating Myriophyllum elatinoides from Cuttings

How to propagate the fine, whorled-leaf milfoil Myriophyllum elatinoides by stem cuttings, using its fast branching growth to build a feathery background quickly.

Overview

Myriophyllum elatinoides is a milfoil with elongate stems and whorled, finely pinnately divided leaves typical of the genus. Like other Myriophyllum it grows rapidly when conditions are favourable, branches naturally and regularly, and is best used as a fine-textured background plant. Its tolerance of cooler, temperate water makes it forgiving in low-to-mid-tech tanks.

Because the species branches readily and roots easily from stems, it multiplies fast: a few stems quickly become a dense feathery thicket, and propagation is simply a matter of harvesting and replanting the abundant growth.

Propagation Method (Cuttings)

Myriophyllum is propagated from stem cuttings: cut off the top 3-4 inches (roughly 8-10 cm) of a stem and replant it, leaving the bottom part to sprout new shoots. Side shoots can be cut off near the main stem and replanted in the substrate to form separate new plants.

Step-by-Step

1. Pick a healthy, younger, thicker stem and cut the top 8-10 cm.
2. Strip the lowest whorls so a short bare section can be inserted into the substrate.
3. Replant the cutting; it will root and continue growing.
4. Leave the bottom of the parent stem to sprout new shoots from the base.
5. Cut side shoots off near the main stem and replant them as separate plants once large enough.

Conditions for Healthy Growth

M. elatinoides is forgiving and grows fast under medium light without demanding CO2, tolerating cool to temperate water. Favourable conditions simply make it grow more rapidly and branch more, so good light and a steady nutrient supply produce the fullest, brightest green feathery growth. Above-water (emersed) leaves on Myriophyllum are stiffer and smaller and can lack the fine dissection of the submerged form.

Trimming & Maintenance

Because growth is vigorous, manage the plant with regular cutting and replanting. Shape the bush with a slope toward the front, cutting front stems shorter than those at the back. After repeated pruning, uproot and discard the worn lower parts and replant fresh tops in their place to keep the stand dense and healthy.

Common Challenges

The main challenge is keeping up with its speed: fast branching growth needs frequent trimming, and detached fragments readily continue growing, so collect trimmings to avoid them rooting where unwanted. Allow emersed-grown stock time to convert to the finer submerged form after planting.