Scale on Peace Lily: Alcohol-Soap Spray and Repotting Risks

Reader's Battle: Recurring Scale on 8-Year-Old Spathiphyllum

Jan's peace lily has scale (sticky leaves). Summer: washed with soapy water, hand-picked scale. Winter: scale returned. Asked about indoor-safe treatments: neem oil, rubbing alcohol, Brand X foliage cleaner.

Expert Treatment Plan

Will Creed: Scale on peace lilies is pernicious—hand removal misses tiny crawlers and hidden ones near soil.

1. First choice: Spray 5 parts water, 1 part rubbing alcohol, squirt of liquid soap. Drench all surfaces to dripping, especially lower stems. Thoroughness is critical.
2. If that fails: Brand X Foliage Cleaner (non-toxic, penetrates crevices).
3. Neem oil: Moderately effective, unpleasant odor, overrated.

Also ensure adequate light and proper watering—stressed plants attract pests.

Follow-Up: Repotting Caused New Problems

Jan repotted both plants (10 yr and 8 yr old) recently. Will strongly advises against repotting older plants—risks: root damage, wrong pot size, drainage material, overwatering, root rot. Now must water only when slight wilting occurs, then track interval.

Free Articles

Will offers Peace Lily care and repotting articles via email: wcreed@HorticulturalHelp.com.