What's eating my agave geminiflora?

Agave geminiflora (Twin-Flowered Agave) is a fine-leafed, globe-forming houseplant that is naturally resistant to most pests. Its hundreds of narrow, thread-edged leaves can harbour mealybugs if conditions are warm and dry. Scale insects are a secondary concern. Outdoors in warm climates, the agave snout weevil remains the most devastating potential pest.

White waxy residue buried deep among the dense narrow leaves; hard to detect early; honeydew and yellowing once established Drench the rosette with diluted neem oil solution to penetrate dense foliage; use fine-tipped alcohol swabs where accessible; repeat weekly

Small hard bumps along narrow leaf midribs; individual leaves yellow and die back Scrape affected leaves carefully; treat with isopropyl alcohol; apply neem oil spray monthly

Rosette collapses from centre outward; foul-smelling brown mush at the core; larvae visible Remove and destroy infested plants; preventive systemic drench in warm outdoor settings during active weevil season