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

Meyer Lemon Scale Infestation: Identification and Control

White Fluffy Bumps on Indoor Citrus

Meyer lemon in pot overwintered indoors develops white fluffy spots with hard black-outlined tops on leaves/stems. Scrapable but concerning.

Expert Diagnosis

Likely scale insects. Contact Pulaski County Extension (501-340-6650, ask for Beth Phelps) to bring samples for positive ID. Then appropriate insecticide can be recommended.

Why ID Matters

Different scales need specific treatments. Guessing wastes time and money.

Plant Diseases: Meyer Lemon Pest Management: Slugs, Aphids, Leaf Curl, and Organic Fruit Safety; Dwarf Meyer Lemon Losing Leaves After Moving Indoors; Aphids on Indoor Meyer Lemon: Organic and Chemical Options; Reviving a Struggling Potted Meyer Lemon: Nutrition, Water Quality, and Care; Repulsive Smell from Meyer Lemon Pots: Root Rot from Standing Water; Meyer Lemon in NJ: Indoor Pests, Pot Size, and Neem Oil Rescue; Meyer Lemon Beaded Stems: Scale Insects; White Patches on Lemon Leaf in Chameleon Enclosure: Safe Treatment; Troubleshooting Leaf Drop on an Indoor Meyer Lemon Tree; Meyer Lemon Fruit Scab and Leaf Issues: Blight and Aphids

Garden Articles

Meyer Lemon Fruit Scarring: Insect Identification and Pre-Harvest Timing

Meyer Lemon Leaf Drop in Seattle: Cold, Light, or Pot‑Bound?

Orangedog Caterpillars on Lemon Tree: Hand-Pick or Bt

Meyer Lemon Multiple Issues: Neem Oil for Pests, Fungus, and Fungus Gnats

White Spots on Meyer Lemon: Powdery Mildew or Insect Infestation?

White Powder Under Lemon Leaves: Early Powdery Mildew or Something Else?

Meyer Lemon Winter Care: Don't Prune Leafless Branches Yet

Plants

Post-Pruning Leaf Spots and Deformation on Meyer Lemon: Organic Brix-Boosting Treatment

Meyer Lemon Leaf Drop After Moving Outdoors: Environmental Shock, Not Disease

Meyer Lemon June Drop: Normal Fruit Thinning vs. Water Stress

Meyer Lemon Tiny Black Fruit: Normal Abortion or Transplant Shock?

Meyer Lemon Sticky Leaves: Honeydew from Sap-Feeding Insects

Meyer Lemon Leaf Drop and Yellowing: Classic Overwatering in a Pot

Meyer Lemon Hardiness Tag Error: It’s 20s, Not -20 °F