However, major infestations are detrimental to the rose's health. The most effective treatment for sawfly larvae is removal by hand. Drop them into soapy water to kill them. You can also use your ...

Btk will not get rid of caterpillars within the rosebud. The rose slug feeds on the underside of the leaf. It is the larva of a sawfly, not a caterpillar. (Rita Perwich) The bristly rose slug is ...

Thank you. M.M. A. Your rose appears to be affected by rose slug sawfly larvae, which feed on the leaf undersides. As you ...