What's eating my begonia 'dragon wing pink'?

Begonia 'Dragon Wing Pink' is a vigorous cane-type begonia grown outdoors in containers and beds. Aphids cluster on new growth and buds. Whitefly and thrips are common in warm weather. In humid conditions, slugs can attack plants at ground level. Outdoors, spider mites may flare in hot, dry spells.

Dense colonies on new growth and flower stems; curled, sticky leaves; sooty mold on honeydew deposits Blast with water; spray insecticidal soap or neem oil; encourage ladybirds and lacewings; check every few days

Clouds of tiny white flies rising when plant is disturbed; yellowing, sticky leaves; sooty mold on honeydew Apply insecticidal soap or pyrethrin spray in the morning; use yellow sticky traps; introduce Encarsia formosa in greenhouse settings

Silvery streaked or bronzed flowers and leaves; distorted buds; dark droppings visible on petals Remove damaged flowers; apply spinosad or neem oil; use blue sticky traps; water stress increases susceptibility so keep plants hydrated

Ragged holes in lower leaves and stems especially near soil level; slime trails visible in the morning Hand-pick at night; use iron phosphate pellets around containers; remove plant debris where slugs shelter during the day