Propagating Syngonanthus anomalus

How to propagate the slim soft-water star plant Syngonanthus anomalus by dividing its rosette clump and separating side plantlets in CO2-rich aquasoil tanks.

Overview

Syngonanthus anomalus is a slim rosette plant of the family Eriocaulaceae with linear leaves and small white flowers when it blooms above the surface. Syngonanthus belongs to the Eriocaulaceae and is found in Latin America, including Brazil, in very soft, acidic blackwater habitats, which makes this a demanding aquascaping species.

It is a rosette, not a stem plant, so it is not topped and replanted. It is propagated by dividing the clump and separating the daughter plantlets that form alongside the mother rosette.

Propagation Method (Division / Plantlets)

Like other Eriocaulaceae rosettes, the plant grows new leaves outward from a central crown and produces baby plantlets and side shoots beside the parent, especially after a stress such as a change in conditions or being moved. These daughters can later be separated as independent plants.

Division of the clump: separate distinct crowns once they stand clearly apart from the main cluster.
Lateral plantlets: detach the side rosettes growing beside the mother once they reach a workable size.

Step-by-Step

Wait until the daughter plantlets reach a suitable size and the crowns are clearly distinct from the main cluster.
Gently uproot the clump; the separation between plantlets becomes obvious once it is out of the substrate.
Separate the crowns by hand, keeping each crown intact so every piece retains its own roots and leaves.
For very small plantlets, use tweezers rather than fingers.
Replant each rosette into rich aquasoil, spacing them so they have room to fill in.

Conditions for Healthy Growth

Very soft, acidic water (low GH and KH) as in its native blackwater rivers.
Strong lighting over the rosette.
Pressurised CO2 dosed generously at substrate level.
Nutrient-rich aquasoil substrate at the root zone.

Maintenance

Let freshly divided rosettes root before disturbing them again. If many daughter plantlets appear at once the clump can become overcrowded and deteriorate as a whole, so thin and replant the daughters once they reach a usable size instead of leaving them packed together.