Moss lawns--those created entirely of moss instead of grass--originated in Japan and are now becoming more prevalent in the United States. The most common forms of mosses used for a moss lawn are cushion and green mosses. If you desire a mosaic look, you can plant different-coloured mosses such as red, white and brown.
Collect some fresh moss in the desired colour or colours. You can buy moss at garden centres or obtain some from nature. Great places to hunt for moss include parks, lawns or even cement cracks. Mix the moss in a blender with buttermilk. Add enough buttermilk so the blender can completely liquefy the moss. Typically a blend of half moss and half buttermilk creates the best consistency.
Dilute the liquefied moss with nine parts water for every one part moss and put the mixture in a 20-gallon pressurised sprayer. If creating a mosaic look, mix the different colours of moss separately, making sure to completely wash all your tools between mosses.
Inspect your yard for the most hospitable location for lawn moss. Moss grows best in damp, shady areas, so the best place would be under a thick tree or next to a wall where sunlight is extremely limited.
Weed the area, removing all grass, weeds and plant life. Weeding encourages moss to grow more quickly than it would have if it had to crowd out other plants.
Spray down the entire area of the yard where you desire the moss lawn. Spray as heavily as possible to encourage the moss to spore and grow.
When creating a mosaic look, consider mapping out your design initially and marking off the various areas. Leave a 6-inch border on all sides of the mosses to ensure that they do not run together.
"Water in" the moss by applying 1/2 inch of water to the entire area. Water the moss again whenever the soil becomes dry to a depth of 1 inch. Moss typically takes two to three months to grow from spores to visible plants. If the moss has not developed within four months, then it did not take, and you will need to try again.