What is causing lines on my Citrus leaves?
Citrus leaf miner is an insect pest whose larvae burrow under the leaf surface and cause new growth to distort and have characteristic ‘squiggles’ all over the leaf surface. A very low toxicity control method involves spraying weekly at the beginning of spring or when there are flushes of new growth with a product called Pest Oil or Bug Oil. It is important to spray regularly as soon as the problem appears as the oil is designed to smother the pests as they arrive and infest the plant. This treatment will also control scale insects on Citrus and other plants such as gardenias.