Sticky Sap on Houseplant: Sign of Scale Infestation

The Sticky Substance Is Honeydew

Scale insects suck sap and excrete honeydew, which drips on leaves, floors, furniture. Scales are hard to see: tiny translucent crawlers, then immobile bumps (1/8 inch), then hard brown shells.

Non-Toxic Treatment Options

1. Brand X Foliage Cleaner: Silicon-based, penetrates crevices. Available from Southwest Plantscape Products (1-800-333-7977, www.southwestplantscape.com).
2. Alcohol Spray: 1 part rubbing alcohol + 8–10 parts water + drop of dish soap. Spray to drip point. Repeat in 5–7 days.
3. Horticultural Oil (Sun Spray Ultra Fine): Smothers scales. Full coverage essential.
4. Hot Pepper Wax: Capsaicin repels/kills. www.hotpepperwax.com.
5. Neem Oil: Dilute with water + Pine-Sol for odor. Similar to horticultural oil.

Critical: Thoroughness and Repetition

Spray every surface until dripping. Repeat in 5–7 days for crawlers. Check weekly thereafter.

Safety

Never spray in direct sun or high heat. Test on a few leaves first.

Email a photo to wcreed@HorticulturalHelp.com for plant ID.