Bougainvillea Scale Infestation: Treatment with Horticultural Oil

Doug's four young bougainvilleas are covered in small white cottony bugs, losing leaves. He suspects mealybugs.

Identification and Treatment

Nick identifies the pest as scale insects, not mealybugs. He recommends spraying with a horticultural oil (e.g., Organocide, a fungicide/oil combo) in late afternoon to avoid sun magnification. Wash off dead insects the next morning. The plants should regenerate, though no guarantees.