Pest identification
What's eating my begonia 'black coffee'?
Mealybugs
Signs: Cottony white specks camouflaged against dark stems and leaf undersides; honeydew, sooty mold, and wilting.
Control: Inspect weekly with bright light; treat with isopropyl alcohol swabs and neem oil spray; isolate affected plants.
Spider mites
Signs: Tiny pale speckling on upper leaf surfaces; webbing beneath leaves in low-humidity environments.
Control: Increase humidity; wipe leaves; apply neem oil or insecticidal soap spray every 5–7 days.
Thrips
Signs: Silver streaks and stippling on dark foliage; black frass specks; flowers distorted if present.
Control: Remove heavily damaged leaves; use spinosad spray or sticky blue traps; introduce Amblyseius cucumeris if indoors.
Keep begonia 'black coffee' pest-free
Healthy plants resist pests best. Get the basics right:
Begonia 'Black Coffee' pests — FAQ
What is eating my begonia 'black coffee'?
Begonia 'Black Coffee' is a dark-leaved cane-type or rhizomatous houseplant hybrid. Mealybugs are hardest to spot against the near-black foliage, making early detection difficult. Spider mites attack in dry rooms, thrips mark leaves with silver streaks, and fungus gnats breed in moist compost. Check undersides regularly.
How do I get rid of mealybugs on begonia 'black coffee'?
Cottony white specks camouflaged against dark stems and leaf undersides; honeydew, sooty mold, and wilting. Inspect weekly with bright light; treat with isopropyl alcohol swabs and neem oil spray; isolate affected plants.
How do I get rid of spider mites on begonia 'black coffee'?
Tiny pale speckling on upper leaf surfaces; webbing beneath leaves in low-humidity environments. Increase humidity; wipe leaves; apply neem oil or insecticidal soap spray every 5–7 days.
How do I get rid of thrips on begonia 'black coffee'?
Silver streaks and stippling on dark foliage; black frass specks; flowers distorted if present. Remove heavily damaged leaves; use spinosad spray or sticky blue traps; introduce Amblyseius cucumeris if indoors.