Scale Insects on Pothos — Recognizing and Removing Stem Bumps
Pothos (Epipremnum aureum)
Symptoms
- brown bumps on stems
- sticky residue
- sooty mold
- crusty dots on vines
Causes
Introduction from nursery plants
Soft brown scale (Coccus hesperidum) is one of the most common scale species found on pothos in indoor settings. They're brought in on infested plants — often already present but not noticed at purchase because juvenile crawlers are essentially invisible without magnification. Once established on pothos, scales are protected by their waxy or hard covering from casual observation.
How to Fix It
- 1
Inspect every stem segment of the pothos vine carefully, including where leaves attach. Scale insects on pothos are most common along the stem, particularly on the undersides and at nodes. Soft scale looks like small, flat, brown bumps; armored scale looks like tiny circular shields.
- 2
Scrape scales off with a soft toothbrush or a fingernail. For heavily infested sections of vine that you're planning to propagate anyway, cutting those sections off entirely is the fastest approach.
- 3
Wipe all stems with a cloth or cotton ball soaked in 70% rubbing alcohol. This kills mobile crawlers and remaining scales not fully removed mechanically.
- 4
Apply horticultural oil or neem oil spray to all vine surfaces. Oils suffocate scale insects by blocking their spiracles. Repeat every ten days for six weeks.
Prevention
- Inspect all new plants carefully before adding to your collection
- Wipe pothos stems monthly — this removes crawlers before they settle and develop protective covers
- Maintain plant health: well-lit, properly watered pothos are less vulnerable to scale establishment
Quick Summary
| Plant | Pothos (Epipremnum aureum) |
|---|---|
| Category | Pests |
| Likely causes | Introduction from nursery plants |
| Fix steps | 4 steps — see above |