Rotala rotundifolia is one of the easiest colourful stem plants. It grows quickly into bushy background groups of small rounded leaves, and under stronger light its tops blush pink to orange. It is far more forgiving than its demanding cousin, Rotala wallichii.
Quick answer: Rotala rotundifolia is an easy, forgiving stem plant with small rounded leaves that grows in low to high light; CO2 is helpful but not required. Stronger light brings out pink-to-orange tips. Plant stems 2–3 cm apart in groups at the back of the tank, trim and replant the tops regularly to keep it bushy, and dose a liquid fertiliser with iron for better colour.
Rotala rotundifolia at a glance
- Leaves: small, rounded; more elongated when grown submerged in strong light
- Colour: green in low light; pink to orange tips under strong light
- Light: low to high, very tolerant
- CO2: helpful, not required
- Placement: background groups
- Difficulty: easy
- Price: ₹120 on Anubias.in
Planting and trimming
- Remove any weights and strip leaves from the bottom 3–4 cm of each stem.
- Plant stems individually, 2–3 cm apart, in odd-numbered groups.
- When stems reach the surface, cut the top 8–10 cm and replant the tops.
- Regular trimming makes bushier groups with more side shoots.
How to get pink colour
Colour depends mostly on light. Give Rotala rotundifolia the brightest spot, add an iron-containing fertiliser, and avoid very high nitrate. CO2 deepens colour further. More tips: getting red colour in stem plants.
Rotundifolia vs Wallichii
Rotundifolia is easy and tolerant; Wallichii has thread-thin whorled leaves, vivid pink-red colour and needs strong light and CO2. Start with Rotundifolia if you have a low-tech tank. Full comparison: Rotala Wallichii vs Rotundifolia.
More stem plant guides:
Where to place Rotala rotundifolia
Plant Rotala rotundifolia in groups of several stems towards the back or sides of the tank, where it can grow up without shading slower foreground plants. Leave a little space between stems so light reaches the lower leaves. Best background plants
Common Rotala rotundifolia problems
| Problem | Likely cause | Fix |
|---|---|---|
| Tall, thin stems with big gaps between leaves | Too little light | Increase light intensity gradually, keep 6–8 hours a day |
| Lower leaves dropping | Shading from the top of the group or low light | Trim and replant tops; thin crowded stems |
| Pale or yellow new leaves | Iron or trace nutrient shortage | Weekly complete fertiliser with iron |
| Leaves melting after planting | Adjusting to new water | Remove damaged leaves; new growth follows |
| Stays green instead of red | Not enough light or iron | Stronger light, iron-rich fertiliser, avoid very high nitrate |
Why plants are not turning red · Yellow leaves: causes and fixes
Plants in this guide
Frequently asked questions
Can Rotala rotundifolia grow without CO2?
Yes. It is one of the easiest stem plants without CO2, though colour is softer.
Why are my Rotala’s lower leaves falling off?
Lower leaves drop when shaded by the tops. Trim and replant the tops, and thin dense groups.
Is Rotala rotundifolia good for beginners?
Yes, it is forgiving and a good first colourful stem plant.
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