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PlantSnap
Plant Care
Xanthoria parietina
(orange wall lichen)
Also Known As
Xanthoria parietina, Yellow lichen, Golden lichen, Sunny lichen
About This Plant
Orange wall lichen is a type of lichen that grows on rocks, walls and other hard surfaces. It has a bright orange color and a crusty texture. The plant is a symbiotic organism that is composed of a fungus and an alga or a cyanobacterium. The fungus provides the structure and the alga or cyanobacterium provides the food through photosynthesis. Orange wall lichen does not have roots, stems or leaves.
Plant Care Instructions
Outdoor Size Range
0.5-2 inches (1.3-5 cm)
Light Requirements
Orange wall lichen prefers bright, indirect light. It can tolerate some direct sunlight, but too much can cause the plant to dry out and die.
Humidity Needs
Orange wall lichen prefers high humidity levels, around 80-90%. It can tolerate lower humidity levels, but it may become dormant.
Fertilizing Schedule
Orange wall lichen does not need to be fertilized. It obtains its nutrients from the air and the surface it grows on.
Pruning Guidelines
Orange wall lichen does not need to be pruned. However, if it becomes too thick, it can be gently removed with a soft brush.
Common Pests and Diseases
Orange wall lichen is not susceptible to pests or diseases.
Indoor Size Range
Not applicable
Watering Schedule
Orange wall lichen does not need to be watered. It absorbs moisture from the air and the surface it grows on.
Temperature Range
Orange wall lichen can tolerate a wide range of temperatures, from -40°F (-40°C) to 120°F (49°C). However, it grows best in temperatures between 50-70°F (10-21°C).
Growing Season
Orange wall lichen can grow year-round, as long as the temperature and humidity conditions are suitable.
Growing Difficulty Level
Orange wall lichen is easy to grow, as it does not require any special care. It can be grown both indoors and outdoors.
USDA Hardiness Zones
Orange wall lichen is not a vascular plant and does not have a USDA hardiness zone.
Did You Know?
Orange wall lichen is used as a natural dye for wool and other fibers. The orange pigment is called parietin and was used by ancient civilizations to dye their clothes.
