Efficacy of three botanical insecticides based on pongam oil (from Pongamia pinnata) and neem oil (from Azadirachta indica) against Plutella xylostella larvae was studied and the results are reported in this paper. All the tested botanical insecticides showed good efficacy against P. xylostella larvae. No significant effect on oviposition was found for any of the products. Application of the botanical insecticides caused high larval mortality and significantly lower damage feeding to the plants (ranging between 0 % – 50 %, depending on concentration and the insecticide used) compared to the control (90 % of the plants were damaged by feeding). The differences between individual botanical insecticide formulations were determined using estimated lethal concentrations. LC50 of the

insecticide based on P. pinnata oil alone were found to be significantly higher compared to LC50 of insecticides designed as combinations of pongam oil and Thymus vulgaris or Foenicum vulgare essential oil, where LD50 was estimated as 0.58 % and 0.73 %, respectively. The efficacy of both botanical insecticides based on pongam oil and essential oil combinations was comparable to NeemAzal T/S (1% azadirachtin). Based on the results presented in this paper, product formulation based on the combination of Pongania pinnata and Thymus vulgaris or Foeniculum vulgare essential oils can be recommended for protection of cabbage crops against Plutella xylostella larvae.