What's eating my luzon vanda?

Luzon Vanda, grown semi-hydroponically or in open baskets, is most vulnerable to scale insects and spider mites on its strap-like leaves and exposed roots. Aphids attack new growth and flower spikes. Its open root system makes root inspection easy — check at every watering and act at the first sign of scale crawlers.

Hard or soft bumps along leaves, stems, and aerial roots; sticky honeydew, sooty mold, and yellowing leaves Scrub with an alcohol-soaked cloth or soft brush; apply horticultural oil spray every 3 weeks; treat aerial roots and stems thoroughly

Yellow stippling across wide strap leaves; fine webbing under low-humidity or heated indoor conditions Rinse foliage and roots with room-temperature water; apply insecticidal soap or neem oil; raise humidity; repeat weekly

Soft clusters on new leaf growth and flower spikes; sticky deposits and distorted emerging leaves Blast off with a firm water rinse; apply insecticidal soap spray; treat spikes carefully to avoid petal damage

Fluffy white colonies at leaf axils, stem nodes, and in root tangles; weakened growth and reduced flowering Dab with isopropyl alcohol swabs; apply neem oil solution; untangle and inspect root mass when repotting to check for root mealybugs