Propagating Cryptocoryne wendtii 'Green': Runners and Rhizome Division

How to propagate the classic green form of Cryptocoryne wendtii by runners and rhizome division, with guidance on crypt melt and the easy, robust care this beginner crypt needs.

Overview

Cryptocoryne wendtii is native to Sri Lanka and is one of the most robust and easy-to-grow species in the genus Cryptocoryne (family Araceae). The 'Green' form is the classic green selection, very common and widely found in the aquarium trade. Its origin is Asia, growth rate is medium, and it reaches 10-30 cm with rosettes 8-15 cm wide.

It is a rosette plant that grows from a rhizome, not a stem plant, so it is not propagated by topping. It is highly variable under different light and other environmental conditions and works well in the midground.

Propagation Method (Runners / Division)

Cryptocoryne wendtii is propagated by runners. Submerged crypts reproduce vegetatively: the plant sends stolons under the substrate, and each forms a daughter plant with its own roots. A mature clump can also be lifted and its rhizome divided into several independent plants.

Step-by-Step

1. Allow the parent rosette to establish and send out runners that form daughter plants in the surrounding substrate.
2. Wait until a daughter has its own roots and several leaves before separating it.
3. Cut the connecting runner with clean scissors and gently free the daughter from the substrate.
4. To multiply faster, lift a mature clump and divide the rhizome into sections, each with roots and leaves.
5. Replant daughters or divisions in nutrient-rich substrate, keeping the crown above the substrate surface.

Conditions for Healthy Growth

Light demand is low and CO2 demand is low; the plant thrives in almost all conditions, even in the shadow of larger plants, and tolerates hard water well. As a root feeder it does best in a nutrient-rich substrate. In open space the leaves will virtually lie on the bottom.

Maintenance

Keep parameters stable and avoid unnecessary uprooting. Thin the colony by removing rooted daughter plants when it grows dense. Established clumps need little intervention beyond occasional removal of old outer leaves.

Common Challenges

Leave the rhizome in place; it typically regrows new submersed leaves once conditions stabilise. Hold parameters steady and be patient through the recovery.