Pogostemon stellatus 'Dassen'

Pogostemon stellatus is a strikingly colourful and ornate aquatic plant found across a wide range of regions, from the swamps of East and Southeast Asia to northern Australia. This broad distribution has led to the emergence of numerous naturally occurring varieties, each with subtle differences in colouration and leaf shape. In the aquarium hobby, Pogostemon stellatus is prized for its star-like whorled leaves and vibrant hues ranging from green to shades of pink and orange, depending on nutrient levels. Despite its beauty, it is considered a high-maintenance species, best suited for experienced aquarists due to its sensitivity to environmental changes and demanding care requirements.

Aquarium Placement and Use

This plant makes a bold statement in aquascapes and is best used as a mid ground to background plant depending on tank size. In large tanks, it can serve as a centrepiece or focal point due to its bushy growth and eye-catching coloration. The delicate, feathery appearance contrasts beautifully with broader-leaved or darker green species. It's especially effective in Dutch-style layouts or as a vertical element in nature aquariums. When planted in clusters, it creates a lush, colourful background that draws attention, but adequate spacing between stems is important to ensure light reaches lower portions and prevents premature leaf loss.

Care and Maintenance

To thrive, Pogostemon stellatus demands strong lighting, consistent CO₂ injection, and a stable supply of macro- and micronutrients. Ideal nitrate levels range from 5–20 mg/L and phosphate from 0.2–2 mg/L, but more critical than the actual concentration is consistency—fluctuations can result in stunted top growth or the development of misshapen shoots. Micronutrient availability, especially iron, is crucial for maintaining vibrant coloration; deficiency will lead to yellowing or whitening leaves. Regular trimming encourages bushier growth and propagation: cut stems can be replanted, and older bases may be discarded. Avoid shaded areas in the tank, as lack of light leads to lower leaf drop and spindly growth.

Emersed Growth

When grown emersed, Pogostemon stellatus exhibits significantly different characteristics. Leaves are generally broader and shorter, with a more rigid texture. Emersed cultivation is often used for propagation in nurseries and is typically easier than submerged growth, as it reduces CO₂ and light demands. However, the vivid colouration associated with submerged growth is usually less intense. Given the right humidity and light, it can flower, producing small, delicate blossoms. Transitioning from emersed to submerged growth must be managed gradually, as the plant requires time to adapt to the new form and environment.

Pogostemon stellatus 'Dassen' Growth Information