Aponogeton longiplumulosus

Scientific name: Aponogeton longiplumulosus

Family: Aponogetonaceae

Maximum size reached under cultivation: 35 - 60 cm (13.78 - 23.62 inch)

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Recommended pH range: 5.7 - 7.9

Recommended water hardness: 0 - 12°dGH (0 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature range: 18 - 26 °C (64.4 - 78.8°F)

Preferred propagation method: Seeds

Native to: Madagascar

Growth rate: Normal

Recommended substrate: Fine gravel

Lighting requirements: Bright

Ideal placement in tank: Background

Family

Aponogetonaceae

Common Name

Long-plumed Aponogeton

Origin

Endemic to Madagascar, Aponogeton longiplumulosus is naturally found in slow-moving rivers and lakes, often fully submerged year-round.

Planting Area

Best placed in the background of aquariums due to its long, elegant leaves that can reach 35 to 60 cm (13.78 - 23.62 inches) in height.

Lighting Requirements

This species thrives under medium to bright lighting. Intense lighting enhances leaf coloration and stimulates healthy growth, but care must be taken to avoid excessive algae growth. A photoperiod of 8–10 hours is ideal.

Propagation

Aponogeton longiplumulosus reproduces from tubers. While it can produce flowers and seeds in aquariums, vegetative propagation through tuber division is far more reliable. Allow the tuber to develop multiple shoots before carefully separating and replanting divisions. After flowering, the plant may enter a short dormant phase during which growth temporarily slows or stops. This is natural and not a sign of decline.

Difficulty

Moderate. It requires stable water parameters and benefits from root fertilization. Its slow growth and occasional dormancy can be misunderstood by beginners.

Short Description

Aponogeton longiplumulosus is a striking aquatic plant known for its long, ruffled, lance-shaped leaves that sway gently in the current. Its deep green or slightly reddish foliage adds elegance to any aquascape. Although it is a slow to moderate grower, its ornamental appearance and minimal maintenance needs make it a prized plant in large and well-lit freshwater aquariums. Ideal conditions include soft to moderately hard water, a temperature range of 18 - 26°C (64.4 - 78.8°F), and a fine gravel substrate rich in nutrients.

Additional Care Tips

Use root tabs or nutrient-rich substrates to support healthy tuber development. Avoid disturbing the tuber during dormancy and resume normal care when new leaves begin to sprout again.

FAQs

• Can Aponogeton longiplumulosus grow without CO₂ supplementation?

  Yes, it can grow without CO₂, but CO₂ injection can enhance leaf size, coloration, and overall vigor.

• Is this plant suitable for small tanks?

  Not recommended. Due to its large size and spreading leaves, it’s best suited for medium to large tanks (over 100 liters).

• What should I do during the plant's dormancy?

  Reduce lighting and avoid disturbing the tuber. Resume normal conditions once new growth appears—usually after a few weeks.