Pest identification
What's eating my phragmipedium caudatum?
Scale insects
Signs: Brown or off-white oval bumps along leaf midribs and bases; yellowing, sticky deposits
Control: Scrape off with a soft brush and alcohol; apply neem oil spray; re-treat after 10 days
Mealybugs
Signs: White woolly clusters at leaf bases and inside the crown; stunted new growth and leaf yellowing
Control: Remove with alcohol-soaked swab; drench crown carefully with insecticidal soap solution; repeat weekly for a month
Aphids
Signs: Soft-bodied insects clustered on flower spikes and new leaves; deformed buds and sticky residue
Control: Rinse spike with lukewarm water; apply insecticidal soap; inspect weekly during flowering season
Fungus gnats
Signs: Larvae damage fine feeder roots in moist bark mix; plants show sudden wilting or stalled growth
Control: Let the top layer of medium dry slightly between waterings; apply Bti (e.g., Gnat Nix or Mosquito Bits) drench; yellow sticky traps for adults
Keep phragmipedium caudatum pest-free
Healthy plants resist pests best. Get the basics right:
Phragmipedium caudatum pests — FAQ
What is eating my phragmipedium caudatum?
Phragmipedium caudatum, a large slipper orchid grown indoors or in cool greenhouses, is most vulnerable to scale insects and mealybugs on its strap-like leaves. Aphids attack flower spikes, and fungus gnats colonize its consistently moist, fine-bark medium. Leaf bases and the crown are the key inspection points.
How do I get rid of scale insects on phragmipedium caudatum?
Brown or off-white oval bumps along leaf midribs and bases; yellowing, sticky deposits Scrape off with a soft brush and alcohol; apply neem oil spray; re-treat after 10 days
How do I get rid of mealybugs on phragmipedium caudatum?
White woolly clusters at leaf bases and inside the crown; stunted new growth and leaf yellowing Remove with alcohol-soaked swab; drench crown carefully with insecticidal soap solution; repeat weekly for a month
How do I get rid of aphids on phragmipedium caudatum?
Soft-bodied insects clustered on flower spikes and new leaves; deformed buds and sticky residue Rinse spike with lukewarm water; apply insecticidal soap; inspect weekly during flowering season
How do I get rid of fungus gnats on phragmipedium caudatum?
Larvae damage fine feeder roots in moist bark mix; plants show sudden wilting or stalled growth Let the top layer of medium dry slightly between waterings; apply Bti (e.g., Gnat Nix or Mosquito Bits) drench; yellow sticky traps for adults