Pest identification
What's eating my calathea majestica royal blue?
Spider mites
Signs: Silvery stippling across the decorative leaf surface, webbing on undersides, and rapid leaf decline in dry conditions
Control: Increase humidity, isolate the plant, and spray top and undersides of leaves with insecticidal soap or neem oil on a weekly schedule
Mealybugs
Signs: White cottony deposits in leaf axils and petiole bases; honeydew makes leaves sticky and attracts sooty mould
Control: Spot-treat with rubbing alcohol on a swab, then apply diluted neem oil as a foliar spray; repeat every 7 days
Thrips
Signs: Silvery-white streaks and scarring on new leaves; distorted unfurling leaves; tiny dark frass specks on undersides
Control: Remove heavily damaged leaves, spray with spinosad or insecticidal soap weekly, and use blue sticky traps to monitor adult numbers
Keep calathea majestica royal blue pest-free
Healthy plants resist pests best. Get the basics right:
- What eats goeppertia majestica — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common calathea majestica royal blue problems & fixes
- Calathea Majestica Royal Blue watering schedule
- Calathea Majestica Royal Blue light requirements
- Full calathea majestica royal blue care guide
Calathea Majestica Royal Blue pests — FAQ
What is eating my calathea majestica royal blue?
Goeppertia majestica 'Royal Blue' is vulnerable to spider mites and mealybugs, typical of the calathea family. Its large, patterned leaves show damage readily. Thrips can also scar new growth with silvery streaks. Maintain high humidity, avoid drafts, and inspect leaf undersides at every watering to stay ahead of infestations.
How do I get rid of spider mites on calathea majestica royal blue?
Silvery stippling across the decorative leaf surface, webbing on undersides, and rapid leaf decline in dry conditions Increase humidity, isolate the plant, and spray top and undersides of leaves with insecticidal soap or neem oil on a weekly schedule
How do I get rid of mealybugs on calathea majestica royal blue?
White cottony deposits in leaf axils and petiole bases; honeydew makes leaves sticky and attracts sooty mould Spot-treat with rubbing alcohol on a swab, then apply diluted neem oil as a foliar spray; repeat every 7 days
How do I get rid of thrips on calathea majestica royal blue?
Silvery-white streaks and scarring on new leaves; distorted unfurling leaves; tiny dark frass specks on undersides Remove heavily damaged leaves, spray with spinosad or insecticidal soap weekly, and use blue sticky traps to monitor adult numbers