Where possible, increase ventilation in the greenhouse, especially in winter months.
Thorough greenhouse cleaning should be carried out at least once each year, usually best done in late winter to early spring. Dislodge moss and algae from between glazing panels with a flexible plastic plant label.
There are several products available to remove moss and algae from hard surfaces in greenhouses, including the floor, staging and glazing.
- Jeyes Fluid is suitable for controlling mould and algae on hard surface and disinfecting pots before use
- Benzalkonium chloride (Vitax Easy Clean) kills algae, liverworts and moss on hard surfaces and will inhibit their growth for three to four weeks after application
- Just Green Glasshouse Cleaner is a surface cleaner (surfactant) based on seaweed extracts and Growing Success Concentrated Greenhouse Cleaner works by enzyme action. Both are suitable for cleaning all glasshouse surfaces
Weedkillers for gardeners (Adobe Acrobat pdf document outlining weedkillers available to gardeners; see section 2b)