1. Scientific Classification

• Scientific name: Rotala sp. 'H'ra'

• Often considered a color variant related to Rotala rotundifolia

• Family: Lythraceae

• Common names:

  • Rotala H’ra

  • Rotala Hi-Red

  • H’ra Rotala

• Origin: Vietnam (H’ra region)

This is one of the brightest red stem plants used in aquascaping, famous for its orange-red to deep red coloration.

🌱 Plant Characteristics

Compared to standard Rotala rotundifolia, this variety has:

• Thinner leaves

• More intense red color

• Bushier growth when trimmed

💡 Ideal Aquarium Conditions

Best color occurs with:

• High light

• Stable CO₂ injection

• Balanced fertilization

💧 Nutrient Requirements

This plant mainly feeds from the water column.

Recommended fertilization:

• Complete liquid fertilizer

• Nitrate (NO₃)

• Phosphate (PO₄)

• Iron (Fe)

Color tips:

• Lower nitrates slightly → stronger red color.

🌿 Growth Pattern

Typical stem plant growth:

1. Stems grow vertically.

2. Side shoots appear after trimming.

3. Regular trimming forms dense red bushes.

It can create a soft red background gradient.

✂️ Planting Method

1. Separate stems from bunch.

2. Remove lower leaves.

3. Plant stems 2–3 cm apart in substrate.

4. After trimming tops, replant cuttings for a fuller group.

⚠️ Common Problems

1. Plant stays green

• Light intensity too low.

2. Weak stems

• CO₂ instability.

3. Bottom leaves melting

• Poor circulation or shading.

🐠 Aquascaping Uses

Best placement:

• Midground

• Background

• Color focal point

Commonly combined with:

• Rotala macrandra

• Alternanthera reineckii

• Ludwigia palustris

It creates bright red contrast behind green plants.

📊 Difficulty Level

Medium

Suitable for:

• High-tech planted tanks

• Aquascapers wanting strong red coloration

✅ Quick Summary