Aponogeton ulvaceus

Scientific name: Aponogeton ulvaceus

Family: Aponogetonaceae

Maximum size reached under cultivation: 30 - 50 cm (11.81 - 19.69 inch)

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Recommended pH range: 6.8 - 7.7

Recommended water hardness: 4 - 12°dGH (71.43 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature range: 22 - 25 °C (71.6 - 77°F)

Preferred propagation method: Seeds

Native to: Madagascar

Growth rate: Fast

Recommended substrate: Fine gravel

Lighting requirements: Medium

Ideal placement in tank: Midground

🏷️ Common Names

• Madagascar Lace Plant (often confused with Aponogeton madagascariensis)
• Ulvaceous Aponogeton

🌍 Origin

Aponogeton ulvaceus originates from Madagascar, where it thrives in slow-moving rivers, lakes, and seasonal ponds. Seasonal water level changes influence its lifecycle, alternating between growth and dormancy. It prefers nutrient-rich, soft waters and grows best in tropical, biodiverse habitats.

📈 Growing Conditions

This is a fully aquatic species that grows best when completely submerged. It is ideal for the midground or background of planted aquariums, reaching heights of 30–50 cm (11.81–19.69 inches). Ideal parameters include a pH of 6.8–7.7, water hardness of 4–12 dGH, and temperatures between 22–25 °C (71.6–77 °F).

Use fine gravel substrate to anchor its bulbous tuber securely. Supplement with iron- and potassium-rich fertilizers. CO₂ is optional but enhances coloration and vigor.

💡 Lighting Requirements

Moderate lighting (8–10 hours daily) is optimal. Intense light may lead to algae on its broad leaves, while insufficient light causes weak, spindly growth. Aim for balance to promote healthy development without triggering algae blooms.

📍 Planting Area

With its long, soft leaves, Aponogeton ulvaceus thrives in the midground or background. It provides a dynamic, flowing look and creates contrast when paired with compact or carpeting plants. Ideal for large aquariums and biotope-style layouts.

🌱 Propagation

This species reproduces via seeds and tuber division:

• 🌼 Seed Propagation: In aquariums, flowers may appear and develop seeds after pollination. Use a brush for manual pollination. Germinate collected seeds in moist substrate.
• 🧅 Tuber Division: When mature, the tuber may form offshoots. Gently divide and replant these to propagate new plants.

During the dormant phase, leaves may shed. Leave the tuber undisturbed—new growth typically follows within a few weeks.

⚙️ Difficulty Level

Moderate. Though generally easy to care for, its fast growth, occasional dormancy, and delicate leaves demand thoughtful handling. Maintain stable parameters, prune old leaves, and avoid overcrowding for best results.

📝 Short Description

Aponogeton ulvaceus is a highly decorative plant with ruffled, translucent green leaves that move gently in water flow. Fast-growing and nutrient-hungry, it quickly becomes a visual highlight in freshwater tanks. Suitable for aquascapes and natural biotope designs, it may bloom if space and care allow. Delicate but rewarding.

Its elegant form and utility for providing shelter for fish and shrimp make it a top choice among aquarists seeking structure, motion, and biological value in planted tanks.