What's eating my spider orchid (brassia)?

Brassia spider orchids share the pest profile of most epiphytic orchids kept indoors. Spider mites are the leading threat, exploiting warm, dry growing conditions. Mealybugs target pseudobulbs and leaf bases, scale insects appear on stems, and aphids attack new growth and flower spikes. Routine inspection keeps populations from establishing.

Pale stippling and silvery sheen on leaves; fine webbing visible on undersides in heavy infestations Increase humidity; wipe leaves with a damp cloth; apply insecticidal soap or neem oil weekly for 3 weeks

Fluffy white wax in leaf axils and at the base of pseudobulbs; honeydew and sooty mold follow Dab with alcohol-soaked cotton swab; treat with neem oil spray; isolate and re-inspect after 2 weeks

Flat brown or tan bumps on pseudobulbs and stems; leaves yellow and growth slows Physically remove with a soft brush dipped in isopropyl alcohol; apply horticultural oil monthly

Clusters on emerging buds and flower spikes; sticky deposits attract sooty mold Rinse off with water; use insecticidal soap; check new growth weekly during the growing season