Thalassodendron ciliatum
Thalassodendron ciliatum · Cymodoceaceae
The gardener's calendar
Ideal time to plant thalassodendron ciliatum: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Common name
- Ciliated seagrass
- Family
- Cymodoceaceae
- Type
- Submerged marine aquatic plant
- Natural habitat
- Tropical and subtropical coastal zones of the Indian Ocean and eastern Mediterranean
- Depth
- 0.5 to 5 meters below surface
- Growth
- Slow to moderate
- Root system
- Underground rhizome
- Foliage
- Persistent, linear and finely ciliated
Care
Light and exposure
Thalassodendron ciliatum requires sufficient natural light for photosynthesis, typically found in shallow coastal zones. In an aquarium or pond, reproduce the soft, diffused light conditions of natural subaquatic environments. Filtered direct sunlight through water is ideal.
Water conditions
This plant is strictly marine or euryhaline (brackish-tolerant). Maintain salinity close to natural seawater levels (32-35 PSU) with stable pH between 8.0 and 8.3. Water must be clear, well-oxygenated and free of pollutants.
Substrate and anchorage
A sandy or marly substrate, rich in organic matter, allows the rhizome to establish properly. Ensure sufficient stability so the plant is not uprooted by currents. A light addition of calcareous sediments promotes mineralization.
Nutrient supply
In natural environments, nutrients come from sediment and ocean water. In captivity, a moderate supply of macronutrients (nitrogen, phosphorus, potassium) and micronutrients can support growth, but generally remains limited for this slow-growing species.
Maintenance and pruning
No regular pruning is necessary. Simply remove dead or damaged leaves to prevent rot. This seagrass develops naturally and slowly; avoid excessive handling.
Health and prevention
Problems primarily arise from chemical imbalance (drop in salinity, excess nutrients) or poor water quality. Monitor for unwanted algae and undesirable herbivores. Standard chemical treatments are not recommended in marine environments.
Did you know?
Thalassodendron ciliatum is one of the few true flowering plants adapted to permanent marine life: its tiny flowers pollinate underwater, a rare botanical feat. These seagrass meadows play a crucial ecological role in carbon sequestration, stabilizing coastal sediments and providing refuge for countless fish and crustacean species.
Where to buy it
Best planted in spring or autumn, away from frost and heatwaves. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September, October.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.