Propagating Cryptocoryne striolata: Runners and Rhizome Division

How to propagate the bullate Borneo crypt Cryptocoryne striolata by stolon runners and rhizome division, with care tips and crypt-melt recovery.

Overview

Cryptocoryne striolata is a rosette plant of the family Araceae, native to Borneo, where it grows in both peat bogs and over limestone. Like all Cryptocoryne, it forms a clump of leaves rising from a creeping rhizome rather than from a stem, so it is not propagated by topping or cuttings. Instead it multiplies vegetatively by sending out runners and by dividing its rhizome.

Propagation Method (Runners / Division)

There are two reliable routes. The plant pushes out horizontal runners (stolons) from the rhizome, each producing a daughter rosette with its own roots. Once that daughter is established, it can be separated. Alternatively, an older rhizome with several growing points can be cut into sections, each carrying leaves and roots.

• Runners (stolons): daughter plantlets emerge alongside the parent.
• Rhizome division: split an established clump into rooted sections.

Step-by-Step

1. Wait until the parent has thrown several daughter rosettes on runners or has grown into a dense clump.
2. Gently lift or partly unbury the rhizome to expose the runners and growing points.
3. Detach a daughter rosette that already carries its own roots, or cut the rhizome into sections, each with leaves and roots.
4. Replant each division in the substrate with the rhizome at the surface and only the roots buried.
5. Keep the new plant undisturbed and allow it to acclimatise before growth resumes.

Conditions for Healthy Growth

This is a slow, resilient species that does best in soft, acidic blackwater conditions reflecting its Borneo origin. The broader genus tolerates roughly 12-33 C, and as a root feeder it benefits from a nutrient-rich substrate. It is often grown emersed in cultivation before being moved underwater.

Maintenance

Because it grows slowly, striolata needs little trimming. Remove only melted or decaying leaves, leave the rhizome at the substrate surface, and let daughter rosettes mature on their runners before lifting them.

Common Challenges

The most common setback is crypt melt: after transplanting or any rapid change in conditions a newly planted crypt may lose all of its leaves. This is normal. The rhizome usually survives and pushes fresh leaves within about a month, so the plant should be left in place rather than discarded.