Scale Infestation on Large Indoor Palm: Honeydew and Treatment Challenges

13-foot palm (8+ years) dripping sticky substance, shiny spots, brown bumps, dried frond tips. Tried soap/water, rosemary oil insecticide, systemic granules. 20+ other houseplants at risk.

Identification

Stickiness = honeydew from scale insects (brown bumps), not sap. Species ID critical—dozens of palms with different needs.

Treatment Reality

• Systemic soil drenches lose effectiveness above 6 feet
• Must thoroughly spray ALL leaf/stem surfaces to dripping wet
• Direct contact with every scale (including invisible juveniles) essential
• Messy process; best outdoors (may be impossible for 13-ft plant)
• Incomplete coverage → survivors reproduce → reinfestation in months

Product choice matters less than thoroughness. Proper light/water maintains natural resistance.

Additional Resources

Free indoor plant pest and palm care articles by emailing wcreed@HorticulturalHelp.com. Comprehensive indoor plant care book also available for purchase.