| Hi Sassi, they can be difficult. Imidacloprid (Provado Ultimate Bug Killer concentrate) is a systemic insecticide that is absorbed into plants and kills the pest as it feeds. A ready-to-use spray containing another systemic insecticide, thiacloprid, is available as Provado Ultimate Bug Killer Ready To Use. There are also biological controls, but these would only be viable in a greenhouse or plantroom where they (ladybugs or parasitic wasps) would be free to roam. I should enquire at a local garden centre for a systemic insecticide.
Bill |