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Scale Insects on Indoor Orange Tree: Identification and Treatment

Recognizing Scale

Young scale: translucent, oval, 1/8-inch bumps on stems/leaf undersides. Mature scale: hard, dark brown shells. Honeydew (sticky sap) is the most obvious sign.

Treatment Protocol

Thoroughly drench all leaf/stem surfaces until dripping.
Repeat in 5–7 days to catch crawlers.
Weekly monitoring thereafter.

Non-Toxic Options

Rubbing Alcohol Spray: 1:5 alcohol:water + liquid soap.
Brand X Foliage Cleaner: Silicon-based, penetrates crevices (Southwest Plantscape Products).
Sun Spray Ultra-Fine Oil: Smothers scale.
Hot Pepper Wax: Cayenne-based repellent.
Neem Oil: Dilute with water + Pine Sol to reduce odor.

Precautions

Never apply in direct sun or high heat.

House Plants: Young Orange Tree with Dead Limbs and Sap: Scale or Aphids Likely; BB-Sized Bumps on Oak Branches: Galls or Scale? Stress is the Root Cause; Ficus Tree Crystalline Deposits: Not Scale, Likely Residue; Jasmine Tree Scale Infestation: Prune, Then Treat with Alcohol Spray; Growing Citrus from Seed vs. Grafted Trees: Bloom Expectations and Care; Sticky Leaves on Jasmine: Identifying and Treating Scale and Mealybug Infestations; Why Indoor Orange Trees Fail to Fruit: Light, Pot Size, and Water; Ficus Sticky Leaves: Scale Insects, Not Normal Growths; 18-Year-Old Orange Tree Sudden Leaf Drop: Root or Light Issue; Scale Treatment Failure: Coverage Is Everything

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