What's eating my guzmania 'rana'?

Guzmania 'Rana', like most bromeliads grown indoors, is most vulnerable to scale insects and mealybugs. Spider mites can appear in low-humidity spots. The central tank (cup) is rarely a pest entry point but should hold only clean water to prevent fungus gnat breeding in any surrounding potting mix.

Hard or waxy bumps on leaf undersides and along the central rosette; yellowing and honeydew deposits. Scrape off with a soft toothbrush or fingernail; treat with a cotton swab soaked in rubbing alcohol; follow with horticultural oil if infestation persists.

Fluffy white clusters at leaf bases and in the cup; sticky residue and stunted growth. Apply 70% isopropyl alcohol with a cotton bud to each colony; neem oil spray on leaf surfaces every seven days until clear.

Pale stippling and faint webbing on leaf undersides, most common when indoor air is very dry. Boost humidity to 50% or above, mist leaves (avoid the cup), and spray with insecticidal soap on affected foliage.