Angel Trumpet Leaf Curl from Whiteflies: Spinosad Treatment

A 3-year-old angel trumpet (Brugmansia) had curling leaves and whiteflies. Owner sprayed water and dish soap; leaves remain curled. Plant moved outside now shows vigorous new growth but some new leaves still curl.

Explanation

Whiteflies suck sap from tender growth, causing permanent leaf curl. Once curled, leaves won't flatten. Water and soap are ineffective against established infestations.

Effective Treatment

• Spinosad (organic): Spray thoroughly, especially leaf undersides. Pests stop feeding within hours, die soon after. Safe for beneficials not eating the plant.
• Reapply weekly for 2–3 weeks to catch emerging larvae.
• Check new growth for tiny stationary spots (whitefly nymphs) on undersides.

New, uncurled leaves will replace damaged ones. Available at garden centers or online.