Rotala Indica (Rotala indica) Care Guide
A delicate stem plant with small oval leaves that develop a pinkish hue under moderate to high lighting.
Compiled by Aquairi from published sources · Published · Updated
Overview
Rotala indica is an aquatic plant in the family Lythraceae. A delicate stem plant with small oval leaves that develop a pinkish hue under moderate to high lighting. Easier to grow than many Rotala species, making it a good entry point into colorful stem plants.
Taxonomy
- Family: Lythraceae
- Genus: Rotala
- Scientific name: Rotala indica
- Other names: Indian Toothcup
Habitat
A stem plant in the family Lythraceae native to South and Southeast Asia, where it grows in rice paddies and seasonal wetlands. Submerged leaves are small, ovate-elliptic and develop pink tones under intense light.
Growth requirements
- Light: medium (≈50-80 PAR at substrate)
- CO2: optional (CO2 improves growth and coloration)
- Temperature: 22-28 °C
- pH: 6-7.5
- GH: 2-12 °dGH
- Substrate: nutrient-rich aquasoil or fertilised gravel
- Nutrient demand: low
- Growth rate: medium
- Difficulty: beginner
Placement
- Recommended placement: midground
- Maximum height: 25 cm
- Trim every: 10 days
Propagation
In cultivation the plant is propagated by stem cuttings (replant the upper portion after trimming).
Propagating Rotala indica from Cuttings
Overview
Rotala indica is a stem plant of the genus Rotala in the family Lythraceae, native to Southeast Asia, where it also grows as a weed of rice fields. Its stems reach 30 to 40 cm with small, oppositely arranged leaves, and it is a popular and comparatively forgiving aquarium plant. As a stem plant it is multiplied straightforwardly by cuttings.
Propagation Method (Cuttings)
All stem plants, Rotala indica included, are easily propagated by cutting off the top few centimetres and planting it directly into the substrate. New buds and roots grow from the internodes, and buried internodes naturally send out roots. Two approaches work: straight trimming, where the top is sheared off and the rooted base regrows fresh tops, and the cut-and-replant method, where healthy tops are kept and old stems discarded.
Step-by-Step
- Choose a healthy top of about 4 to 5 inches from a vigorous stem.
- Cut just above an internode with clean scissors.
- Strip the lowest leaves so the buried portion can root cleanly.
- Plant the cutting 2 to 3 inches deep; some bottom leaves may be covered by substrate.
- Keep the rooted base if it is healthy so it can sprout new tops, or pull and discard old stems and replant only the fresh tops.
Conditions for Healthy Growth
Moderate to higher lighting brings out the pinkish hue that makes this species attractive, and a nutrient-rich substrate supports steady stem growth. It is easier to grow than many other Rotala, so it tolerates a wider range of conditions, but consistent light and feeding produce the densest, most colourful stand.
Trimming & Maintenance
Trimming the tops both controls height and yields cuttings to thicken the group. When bottom stems stay healthy you can trim once, twice, even three times, but after about three trims it is generally time to pull and replant fresh tops, even for the healthiest stems.
Common Challenges
Repeatedly trimmed bases eventually thin out and regrow poorly, which is the usual reason a once-dense group becomes leggy. Too little light keeps the foliage plain green instead of pink, so weak coloration most often signals insufficient light rather than disease.