What's eating my miltoniopsis phalaenopsis?

Miltoniopsis phalaenopsis orchids grown indoors are most commonly attacked by spider mites, which thrive in the warm, dry conditions these cool-growing orchids dislike. Mealybugs and scale insects also target the soft pseudobulbs and leaves. Prompt treatment with insecticidal soap or neem oil and improved humidity keeps plants healthy.

Fine webbing on leaf undersides, silvery stippling across leaf surfaces, leaves turn bronze or papery Raise humidity, mist foliage regularly, apply insecticidal soap or neem oil spray; repeat weekly for 3–4 weeks

White cottony masses in leaf axils and at pseudobulb bases, sticky honeydew, stunted new growth Dab individuals with isopropyl alcohol on a cotton swab; treat the whole plant with neem oil or insecticidal soap weekly

Brown or tan waxy bumps on pseudobulbs and stems; yellowing leaves and weakened plant Scrape off with a soft toothbrush, then apply rubbing alcohol or horticultural oil; isolate affected plants