Pest identification
What's eating my alcantarea imperialis?
Mealybugs
Signs: White cottony colonies in leaf axils and at the tank rim; foliage discolouration and reduced vigour
Control: Treat axils and tank walls with diluted neem oil using a spray bottle; repeat every 10–14 days; pour out and replace tank water
Scale insects
Signs: Hard or waxy bumps on leaves and exterior of the cup; honeydew dripping and sooty mold
Control: Scrape off with a soft brush, wipe with isopropyl alcohol, then spray entire plant with neem oil
Spider mites
Signs: Pale stippling across wide leaf surfaces; visible webbing at leaf tips in low-humidity environments
Control: Mist foliage regularly, increase humidity, apply insecticidal soap or neem oil spray weekly
Fungus gnats
Signs: Adult gnats hover around the plant; larvae in the potting mix damage roots, causing wilting
Control: Allow the growing medium to dry between waterings; apply Bacillus thuringiensis israelensis (Bti) drench or sticky yellow traps
Keep alcantarea imperialis pest-free
Healthy plants resist pests best. Get the basics right:
Alcantarea imperialis pests — FAQ
What is eating my alcantarea imperialis?
Alcantarea imperialis is a giant indoor or conservatory bromeliad. Its enormous water-holding central tank and broad leaf axils are prime habitats for mealybugs and scale insects. Spider mites may strike in dry conditions. The large rosette's size means infestations can advance unnoticed — flush the tank monthly and check leaf bases of each leaf during watering.
How do I get rid of mealybugs on alcantarea imperialis?
White cottony colonies in leaf axils and at the tank rim; foliage discolouration and reduced vigour Treat axils and tank walls with diluted neem oil using a spray bottle; repeat every 10–14 days; pour out and replace tank water
How do I get rid of scale insects on alcantarea imperialis?
Hard or waxy bumps on leaves and exterior of the cup; honeydew dripping and sooty mold Scrape off with a soft brush, wipe with isopropyl alcohol, then spray entire plant with neem oil
How do I get rid of spider mites on alcantarea imperialis?
Pale stippling across wide leaf surfaces; visible webbing at leaf tips in low-humidity environments Mist foliage regularly, increase humidity, apply insecticidal soap or neem oil spray weekly
How do I get rid of fungus gnats on alcantarea imperialis?
Adult gnats hover around the plant; larvae in the potting mix damage roots, causing wilting Allow the growing medium to dry between waterings; apply Bacillus thuringiensis israelensis (Bti) drench or sticky yellow traps