Acorus gramineus pusillus

Scientific name: Acorus gramineus pusillus

Family: Acoraceae

Usual maximum size in aquariums: 15 - 100 cm (5.91 - 39.37 inch)

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Recommended pH range for the species: 6.4 - 7.2

Recommended water hardness (dGH): 4 - 18°N (71.43 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 19 - 22 °C (66.2 - 71.6°F)

Reproduction of the plant: Rhizome

Origin (in the wild): East Asia

How fast these plants grow: Slow

Recommended substrate: Gravel

Demands on lighting: Bright

Ideal placement in a fish tank: Middle

Family

Acoraceae

Planting Area

Acorus gramineus pusillus, commonly known as Miniature Japanese Sweet Flag, is best suited for the midground and foreground areas of an aquarium. Its compact size and slow growth make it an ideal plant for creating a natural, layered look in the aquarium. It can be used to add a touch of greenery between larger plants and the open areas of the tank. In larger aquariums, it can also serve as an accent plant, adding visual interest with its grassy appearance. Its striking golden-hued leaves provide a unique contrast against darker background plants or rocky substrates.

Propagation

Propagation of Acorus gramineus pusillus is relatively straightforward and is typically achieved through rhizome division. When planting, ensure that the rhizome is not buried completely in the substrate, as this can lead to rot. Instead, place the rhizome on the substrate with only the roots anchored into the gravel. To propagate, divide the rhizome into sections, ensuring that each piece has a set of roots and leaves. The divided sections can then be placed in shallow water to allow the rhizomes to toughen up before being transferred into the aquarium. This method not only encourages healthy growth but also allows for the creation of new plants that can be repositioned within the tank or shared with other aquarists.

Difficulty

Acorus gramineus pusillus is an easy-to-grow plant that is well-suited for beginners and experienced aquarists alike. It requires minimal care once established and can adapt to a range of water conditions. However, to prevent it from overtaking the tank, regular trimming is necessary. Its slow growth rate makes it manageable, but without proper maintenance, it can spread and become too dense. Regular trimming will help maintain its compact form and prevent it from overshadowing other plants in the aquarium.

Short Description

This species is a smaller variant of the more common Acorus gramineus. Its slender, golden leaves have a grass-like appearance that adds a subtle elegance to any aquarium setup. Unlike many aquatic plants, Acorus gramineus pusillus is capable of being grown emersed or partially submerged, making it a versatile option for different types of aquascapes, including paludariums and ponds. When grown partially submerged, it may produce small flowers, although it is difficult to obtain seeds from these blooms.

In addition to its aquarium use, this plant can be used as a border plant for ponds, provided it is kept in moist soil. Its adaptability to both aquatic and semi-aquatic environments makes it a valuable addition to various aquascaping projects. However, it should be noted that Acorus gramineus pusillus does best under bright lighting conditions. Insufficient light can result in leggy growth and a duller coloration, while bright light promotes its characteristic golden hue and compact growth.

Maintenance

Acorus gramineus pusillus is relatively low-maintenance, but regular pruning is necessary to prevent it from becoming too dominant in the aquarium. Since it grows slowly, trimming back overgrown leaves is typically needed only occasionally. When pruning, use sharp scissors to cut back the leaves to the desired height, ensuring not to damage the rhizome. This practice will help maintain its tidy appearance and encourage healthy new growth.

For optimal growth, ensure the plant is placed under bright lighting, as this will enhance its golden coloration and encourage compact growth. While it can tolerate a variety of water conditions, maintaining a temperature range of 19-22 °C (66.2-71.6°F) and a pH between 6.4 and 7.2 will support its overall health. Although not particularly demanding in terms of nutrient requirements, providing a nutrient-rich substrate or supplementing with liquid fertilizers can promote more vigorous growth, especially in setups with minimal substrate.

Final Note

Acorus gramineus pusillus is an attractive and adaptable plant that can add a unique touch to aquariums, ponds, and paludariums. Its easy care and propagation make it a suitable choice for aquarists of all experience levels. Whether used as a midground accent or a foreground carpet, this plant's golden, grass-like foliage will enhance the natural beauty of any aquatic environment. With proper lighting, substrate, and occasional maintenance, it can thrive and become a lasting feature in your aquascape.