Here's all about Ludwigia glandulosa — one of the most striking and exotic red aquatic plants, known for its deep burgundy to dark purple hues under optimal conditions. It's a prized feature in many high-tech planted aquariums.

🌿 Scientific Classification

• Scientific Name: Ludwigia glandulosa

• Family: Onagraceae

• Common Name: Narrow Leaf Ludwigia, Glandular Ludwigia

• Origin: Southeastern United States (e.g., Louisiana, Florida)

🌱 Appearance

• Leaf Shape: Narrow, pointed (lanceolate) leaves; can appear slightly ruffled

• Color:

  • Submersed: Dark green in low light → deep purple to wine red under high light and CO₂

  • Emersed: More green with reddish undersides

• Stem: Reddish or purple depending on growth conditions

• Height: 20–50 cm (8–20 inches)

• Width/Spread: 4–6 cm per stem

🔮 When healthy, it develops almost metallic purple or maroon tones, rarely found in other stem plants.

💧 Tank Requirements

🌾 Growth & Propagation

• Growth Rate: Slow to moderate

• Propagation: Top cuttings — trim healthy stems and replant

• Trimming: Encourages side shoots and bushier appearance

• Spacing: 2–3 cm apart; avoid crowding

🌟 Aquascaping Use

• Excellent for background or midground focal points

• Perfect in Dutch-style aquascapes for red contrast

• Pairs beautifully with:

  • Light green plants (Pogostemon erectus, Limnophila sessiliflora)

  • Compact bushy plants (Cryptocoryne, Anubias)

  • Other reds (e.g., Ludwigia super red, Rotala wallichii)

🧠 Care Tips

• Needs intense lighting and stable CO₂ injection to prevent fading and legginess

• Regularly dose iron and micronutrients for rich red-purple coloration

• Avoid shading by neighboring plants — needs direct light

• Can melt if parameters fluctuate or light is poor

• Handle carefully — delicate stems and leaves

⚠️ Common Problems

🐠 Tankmate Compatibility

• Safe for all peaceful fish, shrimp, and snails

• Not ideal with herbivores like large goldfish or some cichlids

• Shrimp may appreciate the structure and biofilm it provides

📌 Quick Summary

✅ Why Choose Ludwigia glandulosa?

• One of the richest deep-colored stem plants available

• Adds visual drama and intensity to aquascapes

• Ideal for aquarists wanting to create contrast and color depth

• A standout centerpiece or accent in Dutch or Nature-style layouts