Botanic Garden >> Gardening > >> Question and Answer >> Plant Diseases

Glowing Green Patches on Northwest VA Trees: Lichens Are Harmless

Identification

Round/long glowing green patches on deciduous trees (not evergreens) = lichens. Symbiotic, non-parasitic, diverse colors.

Significance

Indicate good air quality.
Do not damage trees.
More conspicuous on stressed trees but not the cause.

No treatment needed.

Plant Diseases: Green Growth on Maple Trunk: Lichens Again; Lichens on Trees: Harmless Indicators, Not Killers; Light Green Splotches on Gulf Coast Trees: Lichens, Not a Problem; Glowing Green Patches on Northwest VA Trees: Lichens Are Harmless; Young Tree Green Moss-Like Growth: Lichens Indicate Stress; Green Growth on Maple Trunks: Lichen, Not a Killer; Light Green Growth on Pineapple Guava Trunk: Likely Lichen; Identifying and Managing Lichens on Outdoor Wood Structures; Green Growth on Tree Trunks: Lichens Are Harmless; Identifying Harmless Lichens on Tree Bark

Garden Articles

Blue-Gray Growth on Tree Trunks: Lichens—Harmless, Indicate Light, Not Cause of Fruit Tree Decline

Filamentous Lichens on Trees in Western NC: Harmless Epiphytes

Black Blotches on Mulberry Trunk: Likely Lichens, Not Disease

Timber Growth Rates: Factors Affecting Tree Maturity for Harvest

Green Mold Spreading Across Citrus and Olive Trees: Identification and Treatment

Lichen on Flowering Crabapple: Harmless Indicator of Tree Stress

Sudden Oak Death and Ash Tree Decline in Ohio

Plants

Bird's Nest Fungus in Mulch: Harmless and Cool

Green Moss-Like Growth on Pomegranate Twigs: Harmless Lichens, Not Disease

Green Growth on Old Pecan Trees: Resurrection Fern or Lichens

Green Fungus Killing Sweetgum Trees: Likely Lichen or Algae, Not Fatal

Oak Wool Sower Gall: Harmless Wasp Nursery

Green Growth on Maple Trunks: Lichens, Not Harmful

Green Growth on Black Walnut Branches: Lichens, Not Disease

Copyright © www.100flowers.win Botanic Garden All Rights Reserved