Getting Lichen to Grow on Rocks

Quck answer

To get lichen to grow on rocks, follow these steps:

1. Find a suitable location: Look for rocks that are exposed to sunlight but also receive some shade. Lichen thrives in areas with good air circulation and moderate moisture.

2. Clean the rock surface: Remove any dirt, debris, or moss from the rocks. Lichen needs a clean surface to attach to.

3. Choose the right lichen: There are different types of lichen, so choose one that is suitable for your climate and the conditions of your chosen location.

4. Introduce lichen to the rocks: Gently press the lichen onto the rock surface, ensuring good contact. You can also use a spray bottle to mist the rocks with water to help the lichen establish.

5. Provide care: Lichen is slow-growing, so be patient. Ensure the rocks stay moist but not waterlogged. Avoid using any chemicals or fertilizers that may harm the lichen.

By following these steps, you can successfully encourage lichen to grow on rocks and create a natural and beautiful addition to your outdoor space.


Lichen, a type of fungus that survives on air instead of relying on other plants or animals, can be cultivated by gardeners who desire an old-world aesthetic in their gardens. Lichen is self-sustaining and can thrive in various environments, including rocks, soil, leaves, and bark. One of the advantages of growing lichen is that it does not require roots or stored water to survive. However, to promote the rapid growth of lichen in a specific area, a special formula is needed to facilitate the development of the fungus.

Conventional Growth Formula

Step 1

Transfer the rocks to a shaded area in the garden, as lichen does not thrive in direct sunlight for extended periods.

Step 2

Generously spray the rocks with a one-time application of liquid seaweed fertilizer, milk, or yogurt. Milk is the most accessible option and straightforward to apply.

Step 3

Observe the gradual darkening of the rocks as lichen growth occurs over a few weeks. Within a couple of years, the rocks should be completely covered in dense lichen.

Enhanced Growth Formula

Step 1

Boil a pint of milk and mix it with 1 tsp. of yeast, 1 tsp. of flour, 1 tbsp. of green algae powder, 1/2 tsp. of gelatin, and 1/16 tsp. of water-soluble compost containing micronutrients. Allow the mixture to cool to room temperature.

Step 2

Check the weather forecast to ensure that it is a dry day. It is important to avoid applying the mixture on a rainy day. If the weather is unfavorable, store the mixture in the refrigerator for a few days.

Step 3

When ready to apply the mixture on the rocks, add 2 tsp. each of soil and lichen flakes to the mixture.

Step 4

Dip a paintbrush into the mixture and use it to paint the rocks. New lichen growth should begin within a couple of weeks.

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