The white, cottony blobs on leaf backs, stems, and leaf axils are mealybugs. They've likely been present for a while, hiding in crevices where young, uncoated crawlers escape notice.
Wiping or Q-tip applications miss hidden crawlers. Complete coverage of ALL leaf and stem surfaces to the drip point is essential.
Your 25-year-old Scheffleras are worth the effort—consistent, thorough treatment can eradicate mealybugs.
Red Bugs on South Florida Broccoli: Organic Pyrethrum/Rotenone for Aphids/Flea Beetles
Slugs: The Invisible Night Raiders in Your Vegetable Garden
Mystery Insects on Indoor Hibiscus: Likely Ladybug Larvae, Not Pests
Ponytail Palm with Tiny Bugs: Likely Harmless Visitors, Not Pests
Tiny Bugs in Houseplant Soil: Identification & Action
Diagnosing Golden Spots and Burned-Looking Ivy
Fungus Gnats, Soil Beetles, and Spider Mites: Integrated Control
Centipedes in Houseplant Pots: Harmless Nuisance and Simple Removal Methods
Mystery Soil Bugs in New Houseplant: Alcohol Soil Drench
Identifying and Treating Common Indoor Palm Pests
Yucca Cane Pest Control and Cultural Care
Garden Pest Management: Identification, Prevention, and Natural Controls
Identifying Common Garden Pests: From Aphids to Weevils and How to Spot Them
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