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Grey-White Circles on Lilac Trunk: Need Photo for Identification

Lilac tree shows grey-white circular growths on trunk. Owner asks what fertilizer to use. Expert requests clear photos for accurate identification before recommending treatment.

Next Steps

Submit focused, well-lit photos of the growths. Review images on computer before sending to ensure clarity. Fertilizer recommendation depends entirely on correct diagnosis—could be lichens (harmless), scale insects, or fungal issue.

Plant Diseases: Diagnosing Lilac Decline: Root Rot and Herbicide Injury; Managing Powdery Mildew on Mature Lilac Hedge; Oak Tree Bark Sloughing with Gray Fungus After Drought: Hypoxylon Canker—Tree Must Be Removed; Fungus on Fig Tree Trunk: Wood Decay Warning; Tree Identification: Common Lilac (Syringa vulgaris); Mystery Blob at Mulberry Base: Fungus or Harmless Slime Mold?; Gray Fungus on Large Trees: Lichens, Not a Disease; Transplanting a Lilac in Early Spring; Cottony Scale on Magnolia: Not Fungus, But Insect Infestation; Magnolia Tree Decline: White Bark Growth and Leaf Spots in Fort Worth

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