Algae, lichens and moss on trees and shrubs / RHS Gardening

Algae, lichens and moss often form green or grey, powdery or mossy, crusty growths on the stems, branches and trunks of trees and shrubs. While this can worry gardeners, these growths are harmless, although may occasionally indicate a lack of vigour in the affected plant.

Tree lichen garden hi-res stock photography and images - Alamy

Managing Pests in Gardens: Environmental Factors: Lichens, Mosses and Algae—UC IPM

Search the RHS website for gardening knowledge / RHS Gardening

Algae Lichen Moss, Four Seasons Tree Care Services

52 On hold ideas rain quotes, rainy day quotes, grey gardens movie

52 On hold ideas rain quotes, rainy day quotes, grey gardens movie

Introduction to lichens, algae and moss

Search the RHS website for gardening knowledge / RHS Gardening

Should you worry about lichens, moss, algae on trees? – WABE

Search the RHS website for gardening knowledge / RHS Gardening

Algae, lichens, liverworts and moss / RHS Gardening

The Magic of Lichen—A Study – The Meaning of Water

Search the RHS website for gardening knowledge / RHS Gardening

Search the RHS website for gardening knowledge / RHS Gardening