Algae, liverworts and moss on greenhouses
Green growths such as algae, liverworts and moss can accumulate on the glazing and surfaces of greenhouses, where they are unsightly and cut out light. They can be controlled by improving hygiene and ventilation.
Areas affected Greenhouse glazing and other surfaces
Main causes Damp conditions, poor ventilation
Timing Noticed more in winter, but can be seen after any wet spell
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.