Algae, liverworts and moss on borders and containers

Algae, liverworts and moss will grow on the soil surface of borders, rockeries and containers and are usually associated with compacted soil or poor drainage. Although they don’t harm plants, they can look unsightly, and may inhibit growth of small or young plants.

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Liverwort growing on soil in a border. Image: RHS

Quick facts

Common name Algae, cyanobacteria, liverwort, moss
Areas affected Borders, rockeries and containers
Main causes Damp conditions and poor drainage
Timing More noticable in winter, but can be seen after any wet spell

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