Growing lichen indoors is primarily about maintaining the right environment for its survival, as you're essentially keeping it alive rather than growing it from scratch. Lichens typically arrive already attached to a substrate. Here's how to cultivate lichen inside:
Creating the Ideal Environment
Substrate is Key
Lichens naturally grow on surfaces like rocks, wood, or soil. When bringing lichen indoors, ensure it remains attached to its original substrate or is carefully transferred to a suitable one.
Humidity
- Target Humidity: Aim for a relative humidity around 50%.
- Misting: Periodically mist the lichen with distilled or rainwater to maintain this humidity. Avoid tap water, as minerals can be harmful.
Temperature
- Ideal Range: Lichens thrive in temperatures between 18–25 °C (64–78 °F).
- Tolerance: Most lichens can tolerate temperature variations within reason.
Lighting
- Indirect Light: Provide indirect light for several hours a day. Avoid direct sunlight, which can dry out the lichen. A north-facing window or supplemental grow lights can be suitable.
Terrariums for Lichen
A terrarium creates an enclosed environment that helps maintain the required humidity.
- Open or Closed: You can use either an open or closed terrarium, but a closed terrarium will require less frequent misting.
- Drainage: Ensure adequate drainage in your terrarium to prevent waterlogging, which can harm the lichen.
Maintenance
- Observation: Regularly inspect the lichen for signs of drying out or distress.
- Adjustments: Adjust misting frequency, lighting, and temperature as needed based on your observations.
- Avoid Harsh Chemicals: Keep the lichen away from harsh cleaning products or chemicals.
Example Setup
| Feature | Detail |
|---|---|
| Container | Glass terrarium |
| Substrate | Rock or piece of bark with existing lichen |
| Lighting | Indirect sunlight or LED grow light |
| Humidity | 50%, maintained by periodic misting |
| Temperature | 18–25 °C (64–78 °F) |
| Maintenance | Observe regularly, adjust as needed |
In summary, successfully cultivating lichen indoors involves replicating its natural environment by providing the correct substrate, humidity, temperature, and light, with regular observation and adjustments.
