What's eating my streptocarpus 'purple haze'?

Streptocarpus 'Purple Haze' shares the typical pest profile of indoor Streptocarpus cultivars. Mealybugs are the headline threat, hiding in leaf folds and axils. Aphids attack fresh flower stems, and vine weevil grubs silently destroy roots. Thrips leave silvery scars on the velvety foliage.

Waxy white fluff in leaf axils and along midribs; honeydew leading to sooty mould Isopropyl alcohol swabs or cotton buds; dilute neem oil spray; isolate affected plant promptly

Curled, sticky leaves on new growth; clusters visible on emerging flower scapes Insecticidal soap spray; remove by hand or with a directed water jet; repeat weekly

Sudden wilting unrelated to water stress; C-shaped white grubs found at root zone when unpotted Biological nematode drench (Steinernema kraussei); inspect roots at repotting time; discard severely infested compost

Silvery or bronze streaks across leaf blades; scarred or malformed petals Blue sticky traps; remove affected foliage; spinosad spray for persistent infestations