Scale Insects on Tulip Tree Trunk: Identification and Control

White and Brown Lumps on Tree Trunk? Likely Scale Insects

Immobile, waxy bumps on bark are typically scale insects. They suck sap and weaken the tree over time.

Small infestations: brush off manually.
Larger: soil drench with imidacloprid (Bayer Advanced Tree & Shrub Insect Control).
Confirm ID at nursery before treating.

Plant Diseases: Maple Trunk Sunscald with Lichens: Borer Prevention and Wound Management; White Spots on Tulip Tree: Lichens or Scale—Harmless or Treatable; Tulip Tree White Spots and Sticky Leaves: Lichens, Honeydew, and Insect Control; Mandarin Tree: Sooty Mold and Insect Complex in Australia; Tulip Tree Troubles: Sapsucker Damage and Basal Decay; Maple Leaf Spots and Tulip Tree Trunk Holes: Two Separate Issues; Mature Tulip Poplar Limb Drop: Heart Rot Ecology; White Pine Mortality After Drought and Ice Storm: Beetles or Root Rot; Northern Tooth Fungus on Maple: Hard White Ooze Confirmed; White Powder at Crabapple Base: Possible Flatheaded Borer

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