What's eating my pelargonium 'prince of orange'?

Pelargonium 'Prince of Orange', an orange-scented cultivar, is most frequently attacked by aphids on soft new growth, whitefly beneath leaves, and spider mites in warm, dry conditions indoors. Vine weevil can destroy root systems in containers. Aphids are the primary pest concern for this cultivar.

Dense clusters on new shoots and stem tips; sticky honeydew, leaf curl, and sooty mould. Spray with insecticidal soap or neem oil; dislodge with water jet; introduce Aphidius parasitic wasps in greenhouse or conservatory.

Tiny white adult flies on leaf undersides; yellowing, sticky leaves with developing sooty mould. Yellow sticky traps; weekly insecticidal soap or pyrethrin spray; improve air circulation around the plant.

Pale stippling and fine webbing on leaf undersides; foliage bronzes in warm, dry indoor conditions. Increase humidity by misting; apply neem oil; use predatory mites (Phytoseiulus persimilis) for biological control.

Notched leaf margins from nocturnal adult feeding; grubs devour roots causing sudden pot plant collapse. Apply pathogenic nematode drench in late summer; inspect and clean root ball when repotting.