What's eating my flexuous oncidium?

Flexuous Oncidium is most commonly attacked by scale insects clustering on pseudobulbs and by spider mites on leaf undersides during dry indoor winters. Mealybugs can hide in the thin leaf sheaths. Thrips occasionally target the small dancing blooms. Maintain 50%+ humidity and inspect pseudobulb bases at every watering to catch scale early.

Hard or soft bumps encrusting pseudobulbs and cane bases; yellowing leaves and sooty mould Scrub off with a toothbrush dipped in methylated spirits; apply neem oil spray to all surfaces monthly

Fine pale stippling across the upper leaf surface; webbing visible under magnification in low humidity Raise humidity with a pebble tray or humidifier; wipe leaves with a damp cloth; spray neem oil or a miticide

White waxy wool tucked inside leaf sheaths and at pseudobulb joints; stunted new growths Dab colonies directly with 70% isopropyl alcohol; follow up with systemic insecticidal soap fortnightly