Climacium japonicum
Climacium japonicum
An East Asian terrestrial moss that grows on damp, mist-kissed rocks. It has an upright, tree-like structure. It prefers low to moderate lighting and requires CO2 to support its very slow growth rate.
Température de l’eau
15 - 24 °C
Valeur du pH
6 - 7.5
Type d'eau
Eau douce
Lumière
Moyenne - Élevée
CO2
Moyenne - Élevée
Hauteur attendue
10 cm
Largeur attendue
10 cm
KH
2 - 10 dKH
Description de l'espèce
Geographical Origin and Habitat: Climacium japonicum is native to East Asia, primarily Japan, China, Korea, and parts of Siberia. It grows in very damp terrestrial environments, along forest stream beds, on wet clayey soils, and rock faces constantly kissed by mist or high humidity.
Taxonomy & Genetics: It belongs to the Climaciaceae family and the genus Climacium. Evolutionarily, it is a pleurocarpous moss with a creeping underground stem (rhizome) from which dendroid (tree-like) vertical branches arise, a genetic feature typical of this genus.
Physical Structure: The plant has a unique upright structure that resembles a miniature forest of palm or pine trees. The erect stems (called 'stipes') are bare at the lower part and branch densely at the top, creating a crown of horizontal and arching branches covered in tiny, overlapping leaves.
Color & Texture: Features a deep forest green color, sometimes with golden or yellowish hues under brighter light or cool temperatures. The visual texture is dense and compact, yielding a soft feel but providing a sturdy structure that holds its shape even underwater.
Soins, reproduction et cohabitation
Lighting & CO2: Prefers low to moderate lighting. Under excessive light, it is highly susceptible to algae infestation. CO2 injection is not mandatory, but a small supply helps maintain the upright structure and speeds up its otherwise very slow growth rate.
Nutrition & Substrate: Does not require a fertile substrate because it is a bryophyte that absorbs
Water Chemistry: Thrives in cool, clean water (15-24°C). Sensitive to organic waste buildup and prolonged high temperatures, which can lead to yellowing and decay. The ideal pH range is 6.0 to 7.5.
Space Management & Placement: Best placed as an epiphyte, anchored to driftwood or rocks in the midground of the aquarium. It can also be rested on a sandy bottom, provided the creeping rhizome is not fully buried to prevent rotting.
Pruning: Pruning is rarely needed due to the slow growth. If individual stems grow too tall or untidy, they can be gently trimmed with sharp scissors to promote branching at the base.
Risks & Diseases: The main risk is the growth of filamentous algae that entangle within its branches, making them difficult to remove. Also, dirty or stagnant water and temperatures above 25°C can cause rapid decay.
Origine et répartition géographiques
Climacium japonicum is native to East Asia, primarily Japan, China, Korea, and parts of Siberia. It grows in very damp terrestrial environments, along forest stream beds, on wet clayey soils, and rock faces constantly kissed by mist or high humidity.
Origine
Asie de l'Est
Profil de plante
- Emplacement
- Plan intermédiaire
- It is an incredibly striking accent plant for the terrestrial portions of a paludarium, wabi-kusa, or closed terrarium. It resembles miniature pine trees and can be used to create fascinating forced-perspective landscapes above the water line. It prefers high humidity and moderate, indirect lighting, suffering quickly under hot, direct lights.
- Forme botanique
- Mousse
- This moss is famous for its unique morphology, featuring an upright, rigid main stalk that branches heavily at the top, closely resembling a miniature coniferous tree or a tiny palm tree. The vibrant green, fluffy 'canopy' gives it a highly structural and architectural appearance. It is an exceedingly beautiful plant when properly cared for in a terrarium.
- Croissance
- Moyenne
- Even under ideal terrestrial conditions, the growth rate is quite slow. It will slowly spread via an underground creeping rhizome, sending up new 'tree' shoots periodically. When incorrectly kept fully submerged in an aquarium, its growth is zero, and it is simply in a slow state of dying.
- Substrat
- Aucun
- It should not be planted underwater. In a terrarium or paludarium setting, it prefers a constantly moist, acidic, and humic substrate such as sphagnum peat moss or specialized terrarium soil. Good drainage is still required to prevent the lower rhizomes from rotting due to anaerobic bacteria.
- Fertilisation de la colonne d'eau
- Recommandée
- Water column dosing is useless since the plant should not be kept submerged. For emersed growth, misting the canopy occasionally with reverse osmosis water containing a micro-dose of orchid or epiphyte fertilizer can enhance its color. Heavy liquid fertilization will simply burn its delicate fronds.
- Fertilisation racinaire
- Aucune
- The creeping underground rhizome does extract nutrients from the moist soil. A nutrient-rich, organic substrate layer is usually sufficient for long-term health without the need for concentrated root tabs. Over-fertilizing the soil can lead to salt buildup, which is toxic to the sensitive moss.
- Taille
- Occasionnelle
- Trimming involves snipping off the top "tree" sections if they become too tall or discolored. In emersed setups, the creeping rhizome can be trimmed to control its spread. Dead or browning fronds should be removed promptly to prevent fungal growth, especially in high-humidity environments.
- Propagation
- Fragmentation
- Propagation is done by carefully dividing the creeping horizontal rhizome. Ensure that each separated section of rhizome has at least one healthy upright 'tree' shoot attached to it. Replant the rhizome shallowly in moist, acidic soil and maintain high humidity until the cutting establishes itself.
- Sensibilité
- Modérée
- Climacium japonicum is highly sensitive to being permanently submerged and will almost always slowly rot away in a standard aquarium. It requires high humidity and cool temperatures (below 24°C / 75°F) to thrive in emersed conditions. Drying out is quickly fatal, so the substrate must be kept consistently moist.
- Rôle dans le décor
- Épiphyte, Plan intermédiaire
- In terrariums and Wabi-Kusa, it is used to create scale and illusion, perfectly mimicking a miniature pine forest. It serves as an excellent midground or background accent in small emersed setups. In aquariums, it is occasionally used for short-term display purposes to create a "bonsai" tree effect underwater, though it will not last.
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