Sawfly and larva control on ornamental hibiscus
Hi, we have positively identified a sawfly presence on our ornamental hibiscus planted in the garden. We gathered the larva off the plant and put in a jar and waited for them to morph and sawflies hatched. We have butterflies and hummingbirds, children and pets, and would like to know how to control the infestation without toxic chemicals. Thank you.
You may be referring to the hibiscus sawfly. The adult is a small black fly and the larvae are pale green. The larvae feed on the foliage. You can handpick if the infestation is light or spray with horticultural oil. Follow all label directions and do not spray in high temperatures. See our website for photos and more information http://extension.umd.edu/hgic/sawflies-flowers