General Characteristics
The Madagascar lace plant is known to most aquarists who are passionate about aquatic flora or have at least once browsed through an aquarium plant catalog. Within the Aponogeton genus, this specimen is rightfully considered the most spectacular. Few books on aquarium plants fail to mention this amazing creation of nature. However, it is very rarely seen in our aquariums. This is due to the relative difficulty of its maintenance and propagation.
In nature, Aponogeton madagascariensis is almost impossible to find, as high demand has led to its near extinction in its natural habitat. In my experience, this plant is better suited for a Dutch-style aquarium or for separate cultivation in a specially equipped tank. Understandably, not every hobbyist can afford this — you need to be somewhat of a fanatic about this plant. However, it is worth it.
| Parameter | Value |
|---|---|
| Scientific Name | Aponogeton madagascariensis |
| Family | Aponogetonaceae |
| Origin | Madagascar |
| Leaf Size | 30-50 cm length, 5-8 cm width |
| Temperature | 18-24°C |
| pH | 6.5-7.2 |
| Hardness (GH) | 6-8° |
| Lighting | Moderate, diffused |
| Difficulty | High |
| Placement | Midground, background |
Synonyms: Ouvirandra, lace plant, lattice leaf plant, net plant.
Habitat and Description
The Madagascar lace plant grows in slow-flowing waters of Madagascar at depths of 50-80 centimeters. It inhabits slow-moving waters in the shade of trees and plants growing above the water body. The plant has a root system represented by a tuber or tuber-like rhizome up to 3 cm in diameter.
The most remarkable feature of this plant is its leaves. The tissue between the veins is completely absent. The leaves resemble lace, consisting only of green veins. The shape and perforated nature of the leaves have given this plant names such as lace plant, net plant, and lattice leaf plant.
There are two varieties: var. Henkelianus and var. Major, which differ in the size and shape of the “cells.” In the first, the lattice structure has an irregular form, while in the second it is more symmetrical. Aponogeton madagascariensis has quite a few variations differing in leaf size and shape. Moreover, their maintenance conditions can vary significantly — broad-leaved forms are more difficult to keep than long-leaved ones.
The plant reproduces by seeds that form on a flower stalk rising above the water. The inflorescence is a bifurcated spike covered with small flowers arranged in a spiral.
Maintenance Conditions
Aquarium Volume
If you are fortunate enough to acquire this plant, keep in mind that it alone requires about fifty liters of water. The plant can grow to impressive sizes with leaves up to one meter long. However, such volume is necessary if you want to obtain seeds from it. For simple maintenance, you can place it with other aquatic organisms that suit similar conditions.
Water Parameters
Water temperature: 18-24 degrees Celsius. I recommend staying at the lower end of the range — growth rate slows when water temperature rises above 24°C.
pH: 6.5-7.2.
Hardness: Water should be soft. Hardness should ideally be maintained within 6-8 degrees. To achieve this hardness, mix approximately equal volumes of fresh settled water, boiled water, and distilled water.
Aponogeton madagascariensis is particularly sensitive to algae and old water. Regular water changes are necessary, as well as monitoring phosphorus and nitrogen salt content in the water. In my experience, weekly water changes of 20-25% of the volume are a mandatory condition for successful maintenance.
Lighting
The main maintenance feature is due to the small light-absorbing surface area of the leaf because of its perforated nature. However, this does not mean the plant requires bright light — quite the opposite! The Madagascar lace plant is one of the few plants that absolutely cannot tolerate bright light.
Lighting should be moderate to diffused bright. For slight shading of the aquarium, you can use floating plants such as hornwort. Direct sunlight is unacceptable — under such lighting, the leaves curl or lie on the bottom.
In modern practice, LED fixtures with adjustable intensity are used for lighting aquariums with Madagascar lace plant. I recommend setting medium-intensity lighting — about 0.4-0.5 W/L. It’s important to create diffused light, avoiding direct rays on the leaves.
Substrate and Nutrition
The plant prefers nutrient-poor substrates but containing sufficient iron. The substrate should provide good water circulation — coarse sand or fine gravel in a 5-7 cm layer works well.
The tuber should not be completely buried in the substrate. It should only be lightly secured in the substrate, perhaps between stones — the growing roots will pull it to the proper depth.
Along with adding mineral fertilizers to the water, CO2 supplementation is required. This plant is especially sensitive to iron deficiency in water. Carbon dioxide supply at a concentration of 6-14 mg/L significantly improves plant growth.
Water Movement
The second maintenance feature is the need for water flow. This is relatively easy to achieve today. Simply install a powerhead in the aquarium or place the plant near the filter outlet. Moderate current mimics natural conditions and promotes better gas exchange.
Dormancy Period
In nature, many Aponogeton species have a dormancy period during which some species shed their leaves, while others keep them but do not grow new ones. The dormancy period can often be observed in aquariums, especially after inflorescence formation.
The dormancy period typically occurs in summer. During this time, the plant may completely shed its leaves, leaving only the tuber. Don’t panic — this is a natural process. Sometimes when growth slows, simply transplanting the plant to a new location is enough for it to start producing foliage again.
In my experience, the dormancy period can last from several weeks to several months. It’s important not to discard the tuber — after rest, the plant usually resumes growth with renewed vigor.
Propagation
Flowering and Pollination
When the plant feels that environmental conditions are good enough, it will flower. A bifurcated spike covered with small flowers will appear on a long flower stalk. The flower is beautiful in itself, but without your participation, self-pollination will not occur.
The fact is that pollen in this plant matures earlier than the pistil stigmas. Therefore, if you want to obtain seeds, you’ll have to take on the role of a bee. To do this, carefully collect pollen on cotton tightly wound on a matchstick. Set it aside in a secluded spot, or better yet, stick it in a piece of plasticine so that the pollen doesn’t touch anything. After about a day, it can be applied to the matured pistil stigmas.
Keep in mind that self-pollination often ends less successfully. Seeds obtained from self-pollination may produce weak plants. Therefore, to obtain full-quality seeds, it’s advisable to have two plants and conduct cross-pollination. However, even in this case, the role of pollinator falls on you.
Seed Maturation
In case of successful pollination, the flower stalks will submerge under water and multi-follicle fruits will form where the flowers were. They will mature over 20 days, after which they will float to the surface, and the seeds, resembling green rice grains, will fall to the bottom.
The seeds resemble rice grains in size and shape, except their color is not white but green. Seeds orient themselves vertically using a special scale.
Seed Germination
They must be planted in a container with water level no more than 10 cm. The substrate should be sandy, lighting diffused. They anchor in the substrate with thin, heavily pubescent roots.
The first leaves do not have the characteristic net structure. After two true leaves appear, the tuber-rhizome begins to develop. Under good conditions, seedlings reach 10 cm height in 3-4 months, with tubers more than 1 cm in diameter. Such young plants can already be transplanted into the main aquarium.
Young plants also have a dormancy period, usually up to a month. The babies shed their leaves, but the tubers remain in the substrate and after a month, sometimes longer, they sprout. I recommend growing young plants separately in small containers with shrimp — they help maintain cleanliness without damaging the delicate leaves.
Compatibility and Design Use
Madagascar lace plant is best suited for placement in the center or background of large aquariums with volumes from 100 liters. Its lacy leaves create a stunning visual effect and become the centerpiece of the composition.
The plant pairs well with other shade-tolerant species, such as Echinodorus delicate or other low-light plants. Floating plants can be used to shade the surface. Suitable tank mates include algae-eating fish — Ancistrus or Otocinclus, which help keep the leaves clean.
Possible Problems
With insufficient CO2, nutrients, and lighting, after several months the nutrient supply in the tuber is exhausted and the plant dies. The appearance of dark brown spots on old leaves indicates an excess of organics in the substrate.
If leaves curl or lie on the bottom — check the lighting. Most likely, it’s too bright or has an unsuitable spectrum. Algae growth on leaves indicates insufficiently frequent water changes or excess nutrients.
Conclusion
As you can see, not only fish and animals but also plants can possess amazing features, behaviors, forms, and physiology in the aquarium. The Madagascar lace plant serves as confirmation — a plant quite difficult to maintain and propagate, but capable of bringing many pleasant moments to its owner who manages to create suitable conditions for it. In my experience, success in keeping this plant is a real achievement for any aquarist.
Article updated: 2026-09-05
