Rotala ‘Ceylon’ is a fine-leaf stem plant used in aquascaping, believed to originate from Sri Lanka (formerly Ceylon). It belongs to the genus Rotala in the Lythraceae family.

Aquascapers value it for its thin delicate leaves, fast growth, and ability to form dense green bushes that add texture to planted aquariums.

Basic Information

• Scientific name: Rotala sp. ‘Ceylon’

• Common name: Rotala Ceylon

• Plant type: Stem plant

• Origin: Sri Lanka

• Placement: Midground to background

Because it is listed as “sp.” (species), the exact botanical classification is still uncertain, but it is closely related to Rotala rotundifolia.

Appearance

• Leaf shape: Long, narrow leaves

• Leaf color: Bright green (may develop light yellow-green tips under strong light)

• Stem: Thin, flexible stems

• Height: 20–40 cm typically

It creates a soft, grassy texture compared with broader Rotala species.

Growth Requirements

Lighting

• Medium–High light recommended

Effects of lighting:

• Medium light → vertical growth

• High light → compact bushy growth

Low light may cause leggy stems and sparse leaves.

CO₂

• Recommended for best growth

Ideal level: 20–30 ppm CO₂

Benefits:

• faster growth

• smaller leaves

• denser plant groups

Without CO₂ the plant still grows but becomes less compact.

Nutrients

The plant benefits from regular liquid fertilization.

Important nutrients:

Macronutrients

• Nitrate (NO₃)

• Phosphate (PO₄)

• Potassium (K)

Micronutrients

• Iron (Fe)

• Trace elements

Like most Rotala species, it absorbs nutrients mainly from the water column.

Water Parameters

• Temperature: 22–28 °C

• pH: 5.5–7.2

• Hardness: Soft to moderately hard water

Stable water conditions help maintain healthy stems and dense foliage.

Growth Rate

• Fast-growing plant

Under good conditions it may grow 4–6 cm per week, so regular trimming is necessary.

Propagation

Propagation is very simple:

1. Trim the top stems.

2. Remove leaves from the bottom portion.

3. Replant the cuttings into the substrate.

The base plant will usually produce new side shoots, thickening the group.

Aquascaping Uses

Aquascapers commonly use Rotala Ceylon for:

• Background bushes

• Soft green plant groups

• Texture contrast in planted aquariums

• Dutch aquascape plant streets

It pairs well with plants like:

• Hemianthus micranthemoides

• Micranthemum tweediei

and colorful plants like Alternanthera reineckii.

Common Problems

Leggy growth

• Cause: insufficient lighting.

Pale leaves

• Often due to nutrient deficiency.

Melting after planting

• Sometimes happens when the plant transitions from emersed nursery growth to submerged aquarium conditions.

Why Aquascapers Like It

• Fast-growing and easy to propagate

• Provides fine-leaf texture

• Forms dense green bushes

• Works in both nature and Dutch aquascapes

✅ Aquascaping tip:
Plant 8–12 stems together and trim frequently. Over time this produces a thick, soft green bush that gives the aquarium a natural forest-like appearance.