Pest identification
What's eating my agave americana 'marginata'?
Mealybugs
Signs: White waxy fluff buried in the leaf base rosette; sticky honeydew; outer leaves yellow and wither prematurely
Control: Work alcohol-dipped cotton swabs into the leaf axils; follow with neem oil solution poured into the rosette; repeat fortnightly
Scale insects
Signs: Flat or domed waxy bumps on the leaf surface; localised yellowing; leaves feel sticky
Control: Scrape scales with a toothbrush; treat with isopropyl alcohol swabs; maintain with monthly neem oil sprays
Agave snout weevil (Scyphophorus acupunctatus)
Signs: Heart of plant collapses from within; brown mushy core; visible entry holes near the base
Control: Remove and bag heavily infested plants; apply preventive systemic insecticide to soil around healthy plants in weevil-active regions
Keep agave americana 'marginata' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats agave americana — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common agave americana 'marginata' problems & fixes
- Agave americana 'Marginata' watering schedule
- Agave americana 'Marginata' light requirements
- Full agave americana 'marginata' care guide
Agave americana 'Marginata' pests — FAQ
What is eating my agave americana 'marginata'?
Agave americana 'Marginata' shares its species' pest profile. Kept indoors, mealybugs in the deep leaf bases are the primary threat. Like all Agave americana, outdoor plants are vulnerable to the agave snout weevil. Sharp leaf tips and tough skin deter most animals and chewing insects, keeping the pest list short.
How do I get rid of mealybugs on agave americana 'marginata'?
White waxy fluff buried in the leaf base rosette; sticky honeydew; outer leaves yellow and wither prematurely Work alcohol-dipped cotton swabs into the leaf axils; follow with neem oil solution poured into the rosette; repeat fortnightly
How do I get rid of scale insects on agave americana 'marginata'?
Flat or domed waxy bumps on the leaf surface; localised yellowing; leaves feel sticky Scrape scales with a toothbrush; treat with isopropyl alcohol swabs; maintain with monthly neem oil sprays
How do I get rid of agave snout weevil (scyphophorus acupunctatus) on agave americana 'marginata'?
Heart of plant collapses from within; brown mushy core; visible entry holes near the base Remove and bag heavily infested plants; apply preventive systemic insecticide to soil around healthy plants in weevil-active regions