Propagating Nymphaea micrantha by Adventitious Plantlets

Nymphaea micrantha is a viviparous water lily that forms daughter plantlets on its leaves. Learn to detach rooted leaf-plantlets and divide the rhizome.

Overview

Nymphaea micrantha is a small viviparous water lily in the family Nymphaeaceae, a compact relative of the popular tiger lotus. Water lilies are rhizomatous or tuberous perennial herbs that grow mostly floating leaves on petioles, and they reproduce vegetatively through proliferating structures in addition to seed. In Nymphaea micrantha that vegetative habit is striking: the plant grows from a bulb-like rhizome and is a medium-growth, root-feeding species suited to the aquarium midground under medium light.

Propagation Method (Adventitious Plantlets)

This species is propagated mainly by the adventitious daughter plantlets it produces directly on the leaf, at the point where the blade meets the petiole. Each plantlet develops its own miniature leaves and roots while still attached to the parent, so propagation is simply a matter of letting these vegetative offspring mature and then separating them. The bulb-like rhizome can also be divided as a secondary method.

Step-by-Step

1. Inspect mature leaves and identify daughter plantlets forming where the blade joins the petiole.
2. Wait until each plantlet has its own small leaves and a developing root cluster.
3. Detach the rooted plantlet from the parent leaf with clean fingers or scissors.
4. Plant the plantlet in nutrient-rich substrate, burying the roots but keeping the crown exposed.
5. To divide the rhizome instead, lift the bulb and cut it so each piece keeps roots and at least one growth point, then replant.
6. Allow new floating pads to surface, trimming them periodically to keep the plant compact.

Conditions for Healthy Growth

Provide medium light and a temperature of 22-28 C, with pH 5.5-7.5 and GH 2-12. As a root-feeding bulb plant it benefits from a nutrient-rich substrate; CO2 is not required. The species can also grow emersed.

• Lighting: medium
• Temperature: 22-28 C
• pH: 5.5-7.5, GH: 2-12
• Substrate: nutrient-rich (root feeder)
• CO2: not required

Maintenance

Because water lilies push leaves toward the surface, trim floating pads roughly every two weeks to keep the plant in the midground and let light reach lower plants. Remove old or damaged leaves at the base, and keep root tabs replenished to sustain the bulb's vegetative output.

Common Challenges

• Plantlets detached before rooting are slow to establish or melt away.
• Unchecked floating pads shade out neighbouring plants and dominate the surface.
• A bulb left undisturbed in poor substrate slows down and produces fewer plantlets.