Meyer Lemon Beaded Stems: Scale Insects

Beaded styrofoam-like growth on Meyer lemon stems and leaf undersides.

Treatment Options

Fruit present: Safer's Insecticidal Soap, multiple applications.
No fruit: Bayer Advanced Tree & Shrub Insecticide (imidacloprid soil drench)—systemic, kills in ~1 week, protects 1 year.
Small scale: Dab each mass with heavy mineral oil on Q-tip (tedious but effective).

Plant Diseases: Meyer Lemon Leaf Drop After Moving Outdoors: Environmental Shock, Not Disease; Meyer Lemon June Drop: Normal Fruit Thinning vs. Water Stress; Meyer Lemon Pest Management: Slugs, Aphids, Leaf Curl, and Organic Fruit Safety; Meyer Lemon Trunk Issue: Photo Needed for Diagnosis; Aphids on Indoor Meyer Lemon: Organic and Chemical Options; Meyer Lemon in NJ: Indoor Pests, Pot Size, and Neem Oil Rescue; Meyer Lemon Immediate Fruit Yellowing: Post-Bloom Fruit Drop; Troubleshooting Leaf Drop on an Indoor Meyer Lemon Tree; Meyer Lemon Frost Damage and Scale: Oil and Fertilizer; Meyer Lemon Fruit Scab and Leaf Issues: Blight and Aphids

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