Pest identification
What's eating my large-cupped billbergia?
Mealybugs
Signs: Cottony masses in leaf axils and along the inner cup; leaf yellowing and wilting
Control: Remove with alcohol swabs; rinse the cup and apply dilute neem oil to the whole plant
Scale insects
Signs: Hard or waxy bumps on leaf surfaces; sticky honeydew and black sooty mould below
Control: Scrub off with a soft brush and alcohol; follow with a horticultural oil spray weekly for a month
Fungus gnats
Signs: Stagnant water in the large cup can support larvae; adults emerge and orbit the plant indoors
Control: Flush and refresh the cup water weekly; allow potting mix to partially dry before re-watering
Keep large-cupped billbergia pest-free
Healthy plants resist pests best. Get the basics right:
Large-Cupped Billbergia pests — FAQ
What is eating my large-cupped billbergia?
Large-Cupped Billbergia has a wide central cup that can harbour standing water, making it attractive to fungus gnats and mosquitoes if neglected. Mealybugs and scale insects are the primary sap-sucking pests on the foliage. Refresh the cup water weekly and inspect leaf bases regularly to stay ahead of infestations.
How do I get rid of mealybugs on large-cupped billbergia?
Cottony masses in leaf axils and along the inner cup; leaf yellowing and wilting Remove with alcohol swabs; rinse the cup and apply dilute neem oil to the whole plant
How do I get rid of scale insects on large-cupped billbergia?
Hard or waxy bumps on leaf surfaces; sticky honeydew and black sooty mould below Scrub off with a soft brush and alcohol; follow with a horticultural oil spray weekly for a month
How do I get rid of fungus gnats on large-cupped billbergia?
Stagnant water in the large cup can support larvae; adults emerge and orbit the plant indoors Flush and refresh the cup water weekly; allow potting mix to partially dry before re-watering