Placynthiaceae
Black Felt Lichen: Pet-Safe Plant
Placynthium nigrum
Requires full sun exposure and a limestone substrate, with natural cycles of moisture and complete desiccation.
Every 3 days
Bright indirect
-10° - 35°C
40% - 90%
Categories
What is Black Felt Lichen?
Black Felt Lichen (Placynthium nigrum) is a hard-care plant from the Placynthiaceae family. Placynthium nigrum is a crustose lichen that develops on calcareous substrates. It is characterized by a granular black or dark brown thallus, often forming rosettes or extensive patches on rocky outcrops.
Black Felt Lichen grows up to 1cm, spread of 15cm, watering every 3 days, -10°C â 35°C, 40â90% humidity. It is not suitable for indoor environments and safe for pets.
Unlike easy-care plants, Black Felt Lichen demands constant attention to humidity and light. Not recommended for beginners. Unlike many popular species, Black Felt Lichen is safe to keep around pets.
How to Care for Black Felt Lichen?
TLDR: Black Felt Lichen needs Bright indirect, watering every 3 days, and temperatures between -10-35°C with 40-90% humidity.
How Often Should You Water Black Felt Lichen?
Moisture should preferably come from mist or light rain, allowing the thallus to dry out completely between watering cycles.
How Much Light Does Black Felt Lichen Need?
Needs intense, direct light to maintain the health of the cyanobacterial component responsible for photosynthesis.
What Is the Best Soil for Black Felt Lichen?
Grows exclusively on calcareous surfaces; does not tolerate organic soils, acidic substrates, or constant waterlogging.
What Pot Should You Use for Black Felt Lichen?
Not recommended for conventional pots; it must be kept attached to natural limestone rocks or similar rocky surfaces.
Care Schedule
Misting
Every 2 days
What Is Black Felt Lichen and Where Does It Come From?
Placynthium nigrum is a crustose lichen that develops on calcareous substrates. It is characterized by a granular black or dark brown thallus, often forming rosettes or extensive patches on rocky outcrops.
How to Propagate Black Felt Lichen?
Spore Dispersal or Fragmentation
- Avoid moving the rock during the initial attachment process to prevent disrupting hyphal growth.
- Air quality is fundamental, as lichens are sensitive to pollution.
- 1 Collection
Collect small fragments of the dry lichen or wait for the natural release of spores in a controlled environment.
- 2 Attachment
Gently press the fragments against a clean, damp limestone rock, ensuring direct contact.
- 3 Maintenance
Keep the rock in a location with high atmospheric humidity and adequate light, simulating morning dew.
Materials needed:
How Big Does Black Felt Lichen Grow?
TLDR: Black Felt Lichen can reach up to 1cm tall with Slow growth rate.
Max height
1cm
Spread
15cm
Growth rate
Slow
Plant Uses
Ornamental
Great for decoration
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
Meaning & Symbolism
Symbolizes silent persistence, resilience, and adaptation to extreme geological environments.
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Creeping bentgrass | Hard | Direct sun | 3d | â |
| Crystal Anthurium | Hard | Partial shade | 7d | â ïļ |
| Saguaro | Hard | Direct sun | 21d | â |
| Lisianthus | Hard | Bright indirect | 7d | â |
